Answer and Explanation:
The Journal entry is shown below:-
1. Sales revenue Dr, $28,656 ($121,700 + $287,673) × 7%
To Sales tax payable $28,656
(Being sales tax payable is recorded)
Here we debited the sales revenue as it decreased the revenue while we credited the sales tax payable as it increased the liabilities so that the proper posting could be done
Working note
Credit sales = $130,219 × 100 ÷ 107
= $121,700
Cash sales = $302,810 × 100 ÷ 107
= $287,673