Withdrawals increasing at a constant rate of 5.6% are made quarterly for four years from an account earning 4.7% compounded quarterly. (a) What must be the balance in the account to permit the withdrawals if the first withdrawal is $1600? (b) What is the size of the last withdrawal? (c) What is the total amount withdrawn? (d) How much interest is included in the withdrawals? a) The balance in the account must be $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) b) The size of the last withdrawal is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed) c) The total amount withdrawn is $] (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) d) The amount of interest included in the withdrawals is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed)