Could someone tell me why part 3 is wrong?

Managerial Accounting ACCT 2013
Project
Students are to complete the master budget project below using the template worksheet provided.
Manufacturing: Preparation of the Master Budget
The management of Zigby Manufacturing prepared the following estimated Balance Sheet for March 2017.
To prepare a master budget for April, May and June 2017, management gathers the following information:
																									Part 1
ZIGBY MANUFACTURING
Sales Budgets
April, May, and June 2017
							Budgeted Units				Budgeted Unit Price						Budgeted Total Dollars
April 2017 .......................................................							20,500				$23.85						$ 488,925
May 2017 ........................................................							19,500				23.85						465,075
June 2017 .......................................................							20,000				23.85						477,000
Total for the second quarter.........................							60,000										$1,431,000
Part 2
ZIGBY MANUFACTURING
Production Budget
April, May, and June 2017
			April						May						June							Total
Next months budgeted sales (in units)........			19,500						20,000						20,500
Ratio of inventory to future sales ......			x 80%						x 80%						x 80%
Budgeted ending inventory................			15,600						16,000						16,400
Add budgeted sales (units)......................			19,700						19,900						20,400
Required units to be produced ..........			35,300						35,900						36,800
Deduct beginning inventory...............			16400						15600						16000
Units to be produced ..........................			18,900						20,300						20,800							60,000
Part 3
ZIGBY MANUFACTURING
Raw Materials Budget
April, May, and June 2017
			April					May						June						Total
Production budget (units) ..................			18900					20,300						20,800
Materials requirement per unit...........			x 0.50					x 0.50						x 0.50
Materials needed for production........			9450					10,150						10,400
Add budgeted ending inventory ........			15,600					16,000						16,400
Total materials requirements (units) .			25050					26,150						26,800
Deduct beginning inventory...............			16400					15600						16000
Materials to be purchased..................			9,900					121						10,400						29,075
Material price per unit.........................			$ 20					$ 20						$ 20						$ 20
Total cost of raw material purchases.....			$198,000					$191,750						$208,000						$581,500
Part 4
ZIGBY MANUFACTURING
Direct Labor Budget
April, May, and June 2017
			April					May						June						Total
Budgeted production (units) ..............			19,700					19,900						20,400
Labor requirements per unit (hours) .			x 0.50					x 0.50						x 0.50
Total labor hours needed ...................			9,850					9,950						10,200						30,000
Labor rate (per hour)...........................			$ 15					$ 15						$ 15						$ 15
Labor dollars .......................................			$147,750					$149,250						$153,000						$450,000
Part 5
ZIGBY MANUFACTURING
Factory Overhead Budget
April, May, and June 2017
		April						May							June						Total
Labor hours needed (See DL Budget).........		9,850						9,950							10,200
Variable factory overhead rate (POHR calc)....		2.7						2.7							2.7
Budgeted variable overhead........		26,595						26,865							27,540						$ 121,000
Fixed overhead .............................		20,000						20,000							20,000						20,000
Budgeted total overhead..............		$46,595						$46,865							$47,540						$141,000
Part 6
ZIGBY MANUFACTURING
Selling Expense Budgets
April, May, and June 2017
	April						May						June							Total
Budgeted sales .............................	$20,500						$19,500						$20,000
Sales commission percent ..........	8%						8%						8%
Sales commissions expense .......	1,640						1,560						1,600							$4,800
Sales salaries ................................	3,000						3,000						3,000							9,000
Total selling expenses .................	$ 4,640						$ 4,560						$ 4,600							$123,480
Part 7
ZIGBY MANUFACTURING
General and Administrative Expense Budgets
April, May, and June 2017
			April					May						June						Total
Salaries.............................................			$12,000					$12,000						$12,000						$36,000
Interest on long-term note (.009)..........			4,500					4,500						4,500						13,500
Total expenses ................................			$16,500					$16,500						$16,500						$49,500

ZIGBY MANUFACTURING Estimated Balance Sheet March 31, 2017 Assets Liabilities and Equity Cash Accounts receivable Raw materials inventory Finished goods inventory Total current assets Equipment Accumulated depreciation (150,000) Retained earnings Equipment, net Total assets 200,500 342.248 Short-term notes payable 12.000 212.500 325,540 Long-term note payable 500.000 712.500 335.000 208.788 450,000 Total stockholders' equity543.788 S1.256.288 Total liabilities and equity S1.256.28S S 40.000 Accounts payable 98.500 Total current liabilities S06.288 Total liabilities 600.000 Common stock