An inventory taken the morning after a large theft discloses $60,000 of goods on hand as of March 12. The following additional data is available from the books:

Inventory on hand, March 1

$84,000

Purchases received, March 1 - 11

63,000

Sales (goods delivered to customers)

105,000

Past records indicate that sales are made at 40% above cost.

How would I find the amount of theft loss? Also, the inventory of goods on hand at the close of March 11th, by the growth profit method?