Finding the Fourth Proportional to 139,233.42, 192,142.31 and 75,571.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,233.42 : 192,142.31 = 75,571.25 : x
2. Step 2: Convert to fraction form
   139,233.42/192,142.31 = 75,571.25/x
3. Step 3: Cross multiply
   139,233.42x = 192,142.31 × 75,571.25
4. Step 4: Simplify right side
   139,233.42x = 14,520,433,206.02
5. Step 5: Solve for x
   x = 14,520,433,206.02/139,233.42
6. Step 6: Final answer
   x = 104,288.42