Finding the Fourth Proportional to 139,797.72, 192,921.84 and 76,134.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,797.72 : 192,921.84 = 76,134.24 : x
2. Step 2: Convert to fraction form
   139,797.72/192,921.84 = 76,134.24/x
3. Step 3: Cross multiply
   139,797.72x = 192,921.84 × 76,134.24
4. Step 4: Simplify right side
   139,797.72x = 14,687,957,667.80
5. Step 5: Solve for x
   x = 14,687,957,667.80/139,797.72
6. Step 6: Final answer
   x = 105,065.79