Periodic Inventory Using FIFO, LIFO, and Weighted Average Cost Methods

The units of an item available for sale during the year were as follows:

Jan. $1$ Inventory $6$ units at $$3,000$ $$18,000$

Aug. $7$ Purchase $19$ units at $$3,20060,800$

Dec. $11$ Purchase $14$ units at $$3,30046,200$

$39$ units $$125,000$

There are $19$ units of the item in the physical inventory at December $31.$ The periodic inventory system is used. Determine the inventory cost using $($a$)$ the first$-$in$,$ first$-$out $($FIFO$)$ method; $($b$)$ the last$-$in$,$ first$-$out $($LIFO$)$ method; and $($c$)$ the weighted average cost method $($Round per unit cost to two decimal places and your final answer to the nearest whole dollar$).$