Answer:
Calculation of Estimated uncollectible account
Value       % Uncollectible  Amount uncollectible
$344,000 Â Â Â Â Â Â Â Â Â 20% Â Â Â Â Â Â Â Â Â $68800
$43,000 Â Â Â Â Â Â Â Â Â Â 23% Â Â Â Â Â Â Â Â Â $9890
$34,400 Â Â Â Â Â Â Â Â Â Â 26% Â Â Â Â Â Â Â Â Â $8944
$25,800 Â Â Â Â Â Â Â Â Â Â 30% Â Â Â Â Â Â Â Â Â $7740
$447,200 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â $95,374
1. Balance of allowance for uncollectible accounts on 12/31/2021 is  $95,374
2. Journal entry for adjusting the allowance for uncollectible account is
Date  Account Title and Explanation         Debit    Credit
      Bad debt expenses                 $66,074
        Allowance for uncollectible amount         $66,074
        ($95,374 - $29,300)
       (To record the adjusting allowance for uncollectible account)
3. Â Net account receivable balance on 12/31/2021 is:
Accounts receivables                   $447,200
Less: Allowance for uncollectible account   $66,074
Net Account Receivables                $381,126