Finding the Fourth Proportional to 77,123,391.98, 106,432,239.42 and 42,316,073.20

Step by Step Solution

1. Step 1: Write the proportion equation
   77,123,391.98 : 106,432,239.42 = 42,316,073.20 : x
2. Step 2: Convert to fraction form
   77,123,391.98/106,432,239.42 = 42,316,073.20/x
3. Step 3: Cross multiply
   77,123,391.98x = 106,432,239.42 × 42,316,073.20
4. Step 4: Simplify right side
   77,123,391.98x = 4,503,794,433,792,025
5. Step 5: Solve for x
   x = 4,503,794,433,792,025/77,123,391.98
6. Step 6: Final answer
   x = 58,397,255.59