Finding the Fourth Proportional to 354,194,066.56, 488,944,545.15 and 228,807,399.42

Step by Step Solution

1. Step 1: Write the proportion equation
   354,194,066.56 : 488,944,545.15 = 228,807,399.42 : x
2. Step 2: Convert to fraction form
   354,194,066.56/488,944,545.15 = 228,807,399.42/x
3. Step 3: Cross multiply
   354,194,066.56x = 488,944,545.15 × 228,807,399.42
4. Step 4: Simplify right side
   354,194,066.56x = 111,874,129,836,366,256
5. Step 5: Solve for x
   x = 111,874,129,836,366,256/354,194,066.56
6. Step 6: Final answer
   x = 315,855,460.04