Finding the Fourth Proportional to 139,778.72, 192,761.07 and 93,941.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,778.72 : 192,761.07 = 93,941.90 : x
2. Step 2: Convert to fraction form
   139,778.72/192,761.07 = 93,941.90/x
3. Step 3: Cross multiply
   139,778.72x = 192,761.07 × 93,941.90
4. Step 4: Simplify right side
   139,778.72x = 18,108,341,161.83
5. Step 5: Solve for x
   x = 18,108,341,161.83/139,778.72
6. Step 6: Final answer
   x = 129,550.06