Finding the Fourth Proportional to 915,105,856.52, 1,262,984,124.07 and 558,080,761.85

Step by Step Solution

1. Step 1: Write the proportion equation
   915,105,856.52 : 1,262,984,124.07 = 558,080,761.85 : x
2. Step 2: Convert to fraction form
   915,105,856.52/1,262,984,124.07 = 558,080,761.85/x
3. Step 3: Cross multiply
   915,105,856.52x = 1,262,984,124.07 × 558,080,761.85
4. Step 4: Simplify right side
   915,105,856.52x = 704,847,142,157,730,560
5. Step 5: Solve for x
   x = 704,847,142,157,730,560/915,105,856.52
6. Step 6: Final answer
   x = 770,235,636.83