Finding the Fourth Proportional to 139,233.69, 192,142.71 and 75,571.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,233.69 : 192,142.71 = 75,571.52 : x
2. Step 2: Convert to fraction form
   139,233.69/192,142.71 = 75,571.52/x
3. Step 3: Cross multiply
   139,233.69x = 192,142.71 × 75,571.52
4. Step 4: Simplify right side
   139,233.69x = 14,520,515,690.91
5. Step 5: Solve for x
   x = 14,520,515,690.91/139,233.69
6. Step 6: Final answer
   x = 104,288.81