Finding the Fourth Proportional to 139,234.52, 192,144.00 and 75,572.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,234.52 : 192,144.00 = 75,572.31 : x
2. Step 2: Convert to fraction form
   139,234.52/192,144.00 = 75,572.31/x
3. Step 3: Cross multiply
   139,234.52x = 192,144.00 × 75,572.31
4. Step 4: Simplify right side
   139,234.52x = 14,520,766,936.58
5. Step 5: Solve for x
   x = 14,520,766,936.58/139,234.52
6. Step 6: Final answer
   x = 104,289.99