Finding the Fourth Proportional to 82,259,920.59, 113,452,498.91 and 72,315,540.86

Step by Step Solution

1. Step 1: Write the proportion equation
   82,259,920.59 : 113,452,498.91 = 72,315,540.86 : x
2. Step 2: Convert to fraction form
   82,259,920.59/113,452,498.91 = 72,315,540.86/x
3. Step 3: Cross multiply
   82,259,920.59x = 113,452,498.91 × 72,315,540.86
4. Step 4: Simplify right side
   82,259,920.59x = 8,204,378,820,005,530
5. Step 5: Solve for x
   x = 8,204,378,820,005,530/82,259,920.59
6. Step 6: Final answer
   x = 99,737,256.75