Finding the Fourth Proportional to 89,413.38, 123,355.11 and 57,600.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89,413.38 : 123,355.11 = 57,600.63 : x
2. Step 2: Convert to fraction form
   89,413.38/123,355.11 = 57,600.63/x
3. Step 3: Cross multiply
   89,413.38x = 123,355.11 × 57,600.63
4. Step 4: Simplify right side
   89,413.38x = 7,105,332,049.72
5. Step 5: Solve for x
   x = 7,105,332,049.72/89,413.38
6. Step 6: Final answer
   x = 79,466.09