Answer: See attachment
Step-by-step explanation:
a. Prepare the entry for the security sale on January 15, 2021.
Jan 15, 2021:
Debit Cash $72400
Credit Gain on equipment sale $16400
Credit Equity Investment $56000
b. Prepare the journal entry to record the security purchase on April 17, 2021.
April 17, 2021:
Debit Equity Investment $41440
Credit Cash $41440
c. Compute the unrealized gains or losses.
The unrealized gain is $68760
Check the attachment for further details.