Finding the Fourth Proportional to 20,755,517.59, 31,106,271.72 and 8,445,134.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,755,517.59 : 31,106,271.72 = 8,445,134.48 : x
2. Step 2: Convert to fraction form
   20,755,517.59/31,106,271.72 = 8,445,134.48/x
3. Step 3: Cross multiply
   20,755,517.59x = 31,106,271.72 × 8,445,134.48
4. Step 4: Simplify right side
   20,755,517.59x = 262,696,647,846,820.91
5. Step 5: Solve for x
   x = 262,696,647,846,820.91/20,755,517.59
6. Step 6: Final answer
   x = 12,656,713.90