Finding the Fourth Proportional to 72,419,519.89, 99,940,831.50 and 39,381,701.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419,519.89 : 99,940,831.50 = 39,381,701.23 : x
2. Step 2: Convert to fraction form
   72,419,519.89/99,940,831.50 = 39,381,701.23/x
3. Step 3: Cross multiply
   72,419,519.89x = 99,940,831.50 × 39,381,701.23
4. Step 4: Simplify right side
   72,419,519.89x = 3,935,839,966,810,772.50
5. Step 5: Solve for x
   x = 3,935,839,966,810,772.50/72,419,519.89
6. Step 6: Final answer
   x = 54,347,777.68