Finding the Fourth Proportional to 93,061.09, 128,425.67 and 57,229.93

Step by Step Solution

1. Step 1: Write the proportion equation
   93,061.09 : 128,425.67 = 57,229.93 : x
2. Step 2: Convert to fraction form
   93,061.09/128,425.67 = 57,229.93/x
3. Step 3: Cross multiply
   93,061.09x = 128,425.67 × 57,229.93
4. Step 4: Simplify right side
   93,061.09x = 7,349,792,104.30
5. Step 5: Solve for x
   x = 7,349,792,104.30/93,061.09
6. Step 6: Final answer
   x = 78,978.14