Finding the Fourth Proportional to 139,344,978.87, 192,301,002.72 and 76,625,862.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139,344,978.87 : 192,301,002.72 = 76,625,862.39 : x
2. Step 2: Convert to fraction form
   139,344,978.87/192,301,002.72 = 76,625,862.39/x
3. Step 3: Cross multiply
   139,344,978.87x = 192,301,002.72 × 76,625,862.39
4. Step 4: Simplify right side
   139,344,978.87x = 14,735,230,171,881,736
5. Step 5: Solve for x
   x = 14,735,230,171,881,736/139,344,978.87
6. Step 6: Final answer
   x = 105,746,402.14