Finding the Fourth Proportional to 139,743,499.28, 192,843,520.44 and 76,164,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,743,499.28 : 192,843,520.44 = 76,164,410.72 : x
2. Step 2: Convert to fraction form
   139,743,499.28/192,843,520.44 = 76,164,410.72/x
3. Step 3: Cross multiply
   139,743,499.28x = 192,843,520.44 × 76,164,410.72
4. Step 4: Simplify right side
   139,743,499.28x = 14,687,813,095,482,874
5. Step 5: Solve for x
   x = 14,687,813,095,482,874/139,743,499.28
6. Step 6: Final answer
   x = 105,105,519.55