Finding the Fourth Proportional to 139,337.24, 192,287.59 and 78,906.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,337.24 : 192,287.59 = 78,906.24 : x
2. Step 2: Convert to fraction form
   139,337.24/192,287.59 = 78,906.24/x
3. Step 3: Cross multiply
   139,337.24x = 192,287.59 × 78,906.24
4. Step 4: Simplify right side
   139,337.24x = 15,172,690,528.30
5. Step 5: Solve for x
   x = 15,172,690,528.30/139,337.24
6. Step 6: Final answer
   x = 108,891.86