Finding the Fourth Proportional to 911,503,608.29, 1,257,876,255.83 and 493,815,893.59

Step by Step Solution

1. Step 1: Write the proportion equation
   911,503,608.29 : 1,257,876,255.83 = 493,815,893.59 : x
2. Step 2: Convert to fraction form
   911,503,608.29/1,257,876,255.83 = 493,815,893.59/x
3. Step 3: Cross multiply
   911,503,608.29x = 1,257,876,255.83 × 493,815,893.59
4. Step 4: Simplify right side
   911,503,608.29x = 621,159,287,300,203,520
5. Step 5: Solve for x
   x = 621,159,287,300,203,520/911,503,608.29
6. Step 6: Final answer
   x = 681,466,624.65