Finding the Fourth Proportional to 139,233.86, 192,142.95 and 75,571.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,233.86 : 192,142.95 = 75,571.69 : x
2. Step 2: Convert to fraction form
   139,233.86/192,142.95 = 75,571.69/x
3. Step 3: Cross multiply
   139,233.86x = 192,142.95 × 75,571.69
4. Step 4: Simplify right side
   139,233.86x = 14,520,566,114.51
5. Step 5: Solve for x
   x = 14,520,566,114.51/139,233.86
6. Step 6: Final answer
   x = 104,289.04