Finding the Fourth Proportional to 86,586,831.48, 119,456,568 and 49,419,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   86,586,831.48 : 119,456,568 = 49,419,174.72 : x
2. Step 2: Convert to fraction form
   86,586,831.48/119,456,568 = 49,419,174.72/x
3. Step 3: Cross multiply
   86,586,831.48x = 119,456,568 × 49,419,174.72
4. Step 4: Simplify right side
   86,586,831.48x = 5,903,445,005,443,561
5. Step 5: Solve for x
   x = 5,903,445,005,443,561/86,586,831.48
6. Step 6: Final answer
   x = 68,179,478.39