Finding the Fourth Proportional to 2,631,762,108.43, 3,946,809,710.61 and 860,723,625.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,762,108.43 : 3,946,809,710.61 = 860,723,625.40 : x
2. Step 2: Convert to fraction form
   2,631,762,108.43/3,946,809,710.61 = 860,723,625.40/x
3. Step 3: Cross multiply
   2,631,762,108.43x = 3,946,809,710.61 × 860,723,625.40
4. Step 4: Simplify right side
   2,631,762,108.43x = 3,397,112,362,870,297,088
5. Step 5: Solve for x
   x = 3,397,112,362,870,297,088/2,631,762,108.43
6. Step 6: Final answer
   x = 1,290,812,855.76