Finding the Fourth Proportional to 8,737,942,702.69, 12,061,640,108.61 and 5,727,389,415.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,737,942,702.69 : 12,061,640,108.61 = 5,727,389,415.25 : x
2. Step 2: Convert to fraction form
   8,737,942,702.69/12,061,640,108.61 = 5,727,389,415.25/x
3. Step 3: Cross multiply
   8,737,942,702.69x = 12,061,640,108.61 × 5,727,389,415.25
4. Step 4: Simplify right side
   8,737,942,702.69x = 69,081,709,888,607,780,864
5. Step 5: Solve for x
   x = 69,081,709,888,607,780,864/8,737,942,702.69
6. Step 6: Final answer
   x = 7,905,946,770.21