Finding the Fourth Proportional to 139,655.72, 192,724.89 and 75,993.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,655.72 : 192,724.89 = 75,993.98 : x
2. Step 2: Convert to fraction form
   139,655.72/192,724.89 = 75,993.98/x
3. Step 3: Cross multiply
   139,655.72x = 192,724.89 × 75,993.98
4. Step 4: Simplify right side
   139,655.72x = 14,645,930,472.54
5. Step 5: Solve for x
   x = 14,645,930,472.54/139,655.72
6. Step 6: Final answer
   x = 104,871.68