Finding the Fourth Proportional to 139,442,215.62, 209,188,861.20 and 57,516,402.36

Step by Step Solution

1. Step 1: Write the proportion equation
   139,442,215.62 : 209,188,861.20 = 57,516,402.36 : x
2. Step 2: Convert to fraction form
   139,442,215.62/209,188,861.20 = 57,516,402.36/x
3. Step 3: Cross multiply
   139,442,215.62x = 209,188,861.20 × 57,516,402.36
4. Step 4: Simplify right side
   139,442,215.62x = 12,031,790,710,009,392
5. Step 5: Solve for x
   x = 12,031,790,710,009,392/139,442,215.62
6. Step 6: Final answer
   x = 86,285,137.23