A machine costing $257.500 with a four-year life and an estimated $20,000 salvage value is i Luther Luther Company's factory on January 1. The factory manager estimates the machine will pro units of product during its life. It actually produces the following units: 220,000 in st y7 2nd year, 121,800 in 3rd year, 15.200 in 4th year. The total number of units produced by the e r, 124,600i of yeas ot be depreciated below its estimated salvage value.) Required Prepare (and a table with the following column headings and compute depreciation for each year depreciation of all years combined) for the machine under each depreciation method. Straight-Line Units-of-Production Double-Declining-Balance Year