Nova Companys total overhead cost at various levels of activity are presented below: Month Machine-Hours Total Overhead Cost April 52,000 $191,920 May 42,000 $169,320 June 62,000 $214,520 July 72,000 $237,120 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 42,000 machine-hour level of activity is: Utilities (variable) $ 50,400 Supervisory salaries (fixed) 56,000 Maintenance (mixed) 62,920 Total overhead cost $ 169,320 Nova Companys management wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $237,120 of overhead cost in July was maintenance cost. (Hint: To do this, it may be helpful to first determine how much of the $237,120 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs!) (Do not round intermediate