On January 2, year 1, Union Co. purchased a machine for $264,000 and depreciated it by the straight-line method using an estimated useful life of eight years with no salvage value. On January 2, year 4, Union determined that the machine had a useful life of six years from the date of acquisition and will have a salvage value of $24,000. An accounting change was made in year 4 to reflect the additional data. The accumulated depreciation for this machine should have a balance at December 31, year 4, of