Finding the Fourth Proportional to 147,540,508.61, 221,321,391.71 and 56,664,097.61

Step by Step Solution

1. Step 1: Write the proportion equation
   147,540,508.61 : 221,321,391.71 = 56,664,097.61 : x
2. Step 2: Convert to fraction form
   147,540,508.61/221,321,391.71 = 56,664,097.61/x
3. Step 3: Cross multiply
   147,540,508.61x = 221,321,391.71 × 56,664,097.61
4. Step 4: Simplify right side
   147,540,508.61x = 12,540,976,941,646,558
5. Step 5: Solve for x
   x = 12,540,976,941,646,558/147,540,508.61
6. Step 6: Final answer
   x = 85,000,228.48