Finding the Fourth Proportional to 20,157,552.10, 30,240,216.15 and 8,642,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   20,157,552.10 : 30,240,216.15 = 8,642,851.30 : x
2. Step 2: Convert to fraction form
   20,157,552.10/30,240,216.15 = 8,642,851.30/x
3. Step 3: Cross multiply
   20,157,552.10x = 30,240,216.15 × 8,642,851.30
4. Step 4: Simplify right side
   20,157,552.10x = 261,361,691,464,308.50
5. Step 5: Solve for x
   x = 261,361,691,464,308.50/20,157,552.10
6. Step 6: Final answer
   x = 12,965,943.99