Finding the Fourth Proportional to 72,021,049.36, 99,389,040.56 and 38,981,292.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,021,049.36 : 99,389,040.56 = 38,981,292.72 : x
2. Step 2: Convert to fraction form
   72,021,049.36/99,389,040.56 = 38,981,292.72/x
3. Step 3: Cross multiply
   72,021,049.36x = 99,389,040.56 × 38,981,292.72
4. Step 4: Simplify right side
   72,021,049.36x = 3,874,313,283,229,312.50
5. Step 5: Solve for x
   x = 3,874,313,283,229,312.50/72,021,049.36
6. Step 6: Final answer
   x = 53,794,179.86