Requirement $3.$ Prepare a perpetual inventory record, using the weighted$-$average inventory costing method, and determine the company's cost of goods sold, ending merchandise inventory, and gross profit.

Begin by computing the cost of goods sold and cost of ending merchandise inventory using the weighted$-$average inventory costing method. Enter the transactions in chronological order, calculating new inventory on hand balances after each transaction. Once all of the transactions have been entered into the perpetual record, calculate the quantity and total cost of merchandise inventory purchased, sold, and on hand at the end of the period. $($Round weightedaverage cost per unit to the nearest cent and all other amounts to the nearest dollar.$)$ TRANSACTIONS: jan. $5$ purchase $140$ crates @ $$87$ each, jan. $13$ sale $160$ crates @ $$102$ each, jan. $18$ purchase $154$ crates @ $$91$ each, jan. $26$ sale $200$ crates @ $$104$ each