Answer:
$0
Step-by-step explanation:
According to the scenario, computation of the given data are as follows,
Date of acquire = November 1,2020
Inventory sold on date = January 17,2021
Payment for inventory = January 31,2021
So, inventory balance for the given inventory in Porter's consolidated balance sheet on December 31,2019 was $0, because there was no transaction done on or before December 31,2019.