I am stuck on this question.

A machine can be purchased for $252,000 and used for five years, yielding the following net incomes. In projecti double-declining depreciation is applied, using a five-year life and a zero salvage value Year 1 Year 2 Year 3 $70,000 Year 4 $59,500 Year 5 $107,000 $12,000 $36,000 Net income Compute the machine's payback period (ignore taxes). (Round payback period answer to 3 decimal places.) Answer is complete but not entirely correct. Computation of Annual Depreciation Expense Beginning Book Value Annual Depr (40% of Book Value Accumulated Ending Year Depreciation at Year-End Book Value 100,800 0 151,200 90,720 54,432 32,659 19,591 252,000 151,200 90,720 54,432 32,659 100,800 60,480 36,288 21,773 13,068 60,480 96,768 118,541 131,609 4 5 Annual Cash Flows Net income Cumulative Cash Flow $ (252,000) 112,800 139,200 42,720 149,008 230,281 350,349 Year Depreciation Net Cash Flow $ (252,000) 12,000 36,000 70,000 59,500 107,000 100,800 60,480 36,288 21,773 13,068 96,480 106,288 81,273 120,068 4 1.521 x years Payback period