Finding the Fourth Proportional to 139,443,469.11, 209,190,736.90 and 57,517,654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443,469.11 : 209,190,736.90 = 57,517,654.50 : x
2. Step 2: Convert to fraction form
   139,443,469.11/209,190,736.90 = 57,517,654.50/x
3. Step 3: Cross multiply
   139,443,469.11x = 209,190,736.90 × 57,517,654.50
4. Step 4: Simplify right side
   139,443,469.11x = 12,032,160,529,614,602
5. Step 5: Solve for x
   x = 12,032,160,529,614,602/139,443,469.11
6. Step 6: Final answer
   x = 86,287,013.70