Answer and Explanation: 
The Journal entry is shown below:- 
1. Cash Dr, $270,000 (300 × $900) 
 To Unearned rent revenue $270,000 
(Being cash receipts is recorded)
2. Unearned rent revenue $270,000 
 To rent revenue $270,000 
(being unearned rent revenue is recorded)
3. Cash Dr, $205,200 (240 × $900 * 95%) 
 To Unearned rent revenue $205,200 
(Being cash receipts is recorded)
4. Cash Dr, $40,320 (56 900 80%) 
 To Unearned rent revenue $40,320
(being unearned rent revenue is recorded)