Finding the Fourth Proportional to 139,234.86, 192,144.33 and 75,572.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,234.86 : 192,144.33 = 75,572.69 : x
2. Step 2: Convert to fraction form
   139,234.86/192,144.33 = 75,572.69/x
3. Step 3: Cross multiply
   139,234.86x = 192,144.33 × 75,572.69
4. Step 4: Simplify right side
   139,234.86x = 14,520,863,886.35
5. Step 5: Solve for x
   x = 14,520,863,886.35/139,234.86
6. Step 6: Final answer
   x = 104,290.43