Finding the Fourth Proportional to 102,362.29, 141,258.50 and 57,042.18

Step by Step Solution

1. Step 1: Write the proportion equation
   102,362.29 : 141,258.50 = 57,042.18 : x
2. Step 2: Convert to fraction form
   102,362.29/141,258.50 = 57,042.18/x
3. Step 3: Cross multiply
   102,362.29x = 141,258.50 × 57,042.18
4. Step 4: Simplify right side
   102,362.29x = 8,057,691,792.03
5. Step 5: Solve for x
   x = 8,057,691,792.03/102,362.29
6. Step 6: Final answer
   x = 78,717.39