Finding the Fourth Proportional to 139,442,236.18, 209,188,892.01 and 57,516,422.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,442,236.18 : 209,188,892.01 = 57,516,422.86 : x
2. Step 2: Convert to fraction form
   139,442,236.18/209,188,892.01 = 57,516,422.86/x
3. Step 3: Cross multiply
   139,442,236.18x = 209,188,892.01 × 57,516,422.86
4. Step 4: Simplify right side
   139,442,236.18x = 12,031,796,770,462,034
5. Step 5: Solve for x
   x = 12,031,796,770,462,034/139,442,236.18
6. Step 6: Final answer
   x = 86,285,167.97