Finding the Fourth Proportional to 139,594.50, 192,640.50 and 79,145.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,594.50 : 192,640.50 = 79,145.82 : x
2. Step 2: Convert to fraction form
   139,594.50/192,640.50 = 79,145.82/x
3. Step 3: Cross multiply
   139,594.50x = 192,640.50 × 79,145.82
4. Step 4: Simplify right side
   139,594.50x = 15,246,690,337.71
5. Step 5: Solve for x
   x = 15,246,690,337.71/139,594.50
6. Step 6: Final answer
   x = 109,221.28