Finding the Fourth Proportional to 258,889,695.96, 357,267,766.76 and 139,812,276.72

Step by Step Solution

1. Step 1: Write the proportion equation
   258,889,695.96 : 357,267,766.76 = 139,812,276.72 : x
2. Step 2: Convert to fraction form
   258,889,695.96/357,267,766.76 = 139,812,276.72/x
3. Step 3: Cross multiply
   258,889,695.96x = 357,267,766.76 × 139,812,276.72
4. Step 4: Simplify right side
   258,889,695.96x = 49,950,419,870,333,744
5. Step 5: Solve for x
   x = 49,950,419,870,333,744/258,889,695.96
6. Step 6: Final answer
   x = 192,940,934.49