Saint Paul Company produces a line of non-motorized boats . Saint Paul uses a job order costing system and applies manufacturing overhead cost using direct-labor cost. The following data are for 2013:
Estimated Manufacturing Overhead Cost : $125,000
Actual Manufacturing Overhead Cost : $117,000
Estimated Direct Labor Cost : $250,000
Actual Direct Labor Cost : $224,000
Inventory balances on Dec 31, 2013 were as follows:
W.I.P : Ending Balance : $50,700 2013 direct labor cost in ending balance : $20,500
Finished Goods : $245,050 2013 direct labor cost in ending balance : $59,280
Cost of goods sold : $549,250 2013 direct labor cost in ending balance : $148,200


Saint Paul allocates any over or under applied overhead to the work in process , finished goods, and cost of goods sold accounts according to their ending balances.
What is the ending balance of the three accounts at the end of the year (after under or overapplied overhead costs are allocated)?
Answer was $51,000 for W.I.P, $246,500 for Finished Goods and $552,500 for cost of goods sold but I don't get how.
I tried calculating predetermined overhead rate by doing 125,000/250,000 to get 0.50 but it did not help. Please show help with steps.