Finding the Fourth Proportional to 139,233.81, 192,142.80 and 75,571.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,233.81 : 192,142.80 = 75,571.62 : x
2. Step 2: Convert to fraction form
   139,233.81/192,142.80 = 75,571.62/x
3. Step 3: Cross multiply
   139,233.81x = 192,142.80 × 75,571.62
4. Step 4: Simplify right side
   139,233.81x = 14,520,542,667.34
5. Step 5: Solve for x
   x = 14,520,542,667.34/139,233.81
6. Step 6: Final answer
   x = 104,288.91