M$9-6($Algo$)$ Computing Book Value $($Double$-$Declining$-$Balance Depreciation$)[$LO $9-3]$

A machine that cost $$100,000$ has an estimated residual value of $$10,000$ and an estimated useful life of four years. The company uses double$-$declining$-$balance depreciation.

Required:

Calculate its book value at the end of year $3.($Do not round intermediate calculations.$)$