Chapter 17, Problem 17.13E

I am searching for the correct answer to this general accounting problem with proper accounting rules.

Calculate the sustainable growth rate

Orville Manufacturing Company's work-in-process inventory on August 1 has a balance of $32,400, representing Job No. 527. During August, $61,500 of direct materials were requisitioned for Job No. 527, and $42,800 of direct labor cost was incurred on Job No. 527. Manufacturing overhead is allocated at 125% of direct labor cost. Actual manufacturing overhead costs incurred in August amounted to $52,500. No new jobs were started during August. Job No. 527 is completed on August 28. Is manufacturing overhead overallocated or underallocated for the month of August and by how much?