Finding the Fourth Proportional to 1,153,039,662.99, 1,591,196,269.41 and 624,404,560.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153,039,662.99 : 1,591,196,269.41 = 624,404,560.76 : x
2. Step 2: Convert to fraction form
   1,153,039,662.99/1,591,196,269.41 = 624,404,560.76/x
3. Step 3: Cross multiply
   1,153,039,662.99x = 1,591,196,269.41 × 624,404,560.76
4. Step 4: Simplify right side
   1,153,039,662.99x = 993,550,207,679,221,632
5. Step 5: Solve for x
   x = 993,550,207,679,221,632/1,153,039,662.99
6. Step 6: Final answer
   x = 861,679,124.81