Finding the Fourth Proportional to 627,488,196.72, 940,141,512.08 and 440,345,234.38

Step by Step Solution

1. Step 1: Write the proportion equation
   627,488,196.72 : 940,141,512.08 = 440,345,234.38 : x
2. Step 2: Convert to fraction form
   627,488,196.72/940,141,512.08 = 440,345,234.38/x
3. Step 3: Cross multiply
   627,488,196.72x = 940,141,512.08 × 440,345,234.38
4. Step 4: Simplify right side
   627,488,196.72x = 413,986,834,487,235,200
5. Step 5: Solve for x
   x = 413,986,834,487,235,200/627,488,196.72
6. Step 6: Final answer
   x = 659,752,385.23