Finding the Fourth Proportional to 91,613.57, 137,413.74 and 28,432.04

Step by Step Solution

1. Step 1: Write the proportion equation
   91,613.57 : 137,413.74 = 28,432.04 : x
2. Step 2: Convert to fraction form
   91,613.57/137,413.74 = 28,432.04/x
3. Step 3: Cross multiply
   91,613.57x = 137,413.74 × 28,432.04
4. Step 4: Simplify right side
   91,613.57x = 3,906,952,952.23
5. Step 5: Solve for x
   x = 3,906,952,952.23/91,613.57
6. Step 6: Final answer
   x = 42,646.01