Finding the Fourth Proportional to 139,470.48, 192,468.72 and 75,807.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,470.48 : 192,468.72 = 75,807.72 : x
2. Step 2: Convert to fraction form
   139,470.48/192,468.72 = 75,807.72/x
3. Step 3: Cross multiply
   139,470.48x = 192,468.72 × 75,807.72
4. Step 4: Simplify right side
   139,470.48x = 14,590,614,834.52
5. Step 5: Solve for x
   x = 14,590,614,834.52/139,470.48
6. Step 6: Final answer
   x = 104,614.36