Finding the Fourth Proportional to 139,257.52, 192,225.30 and 82,668.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,257.52 : 192,225.30 = 82,668.94 : x
2. Step 2: Convert to fraction form
   139,257.52/192,225.30 = 82,668.94/x
3. Step 3: Cross multiply
   139,257.52x = 192,225.30 × 82,668.94
4. Step 4: Simplify right side
   139,257.52x = 15,891,061,792.18
5. Step 5: Solve for x
   x = 15,891,061,792.18/139,257.52
6. Step 6: Final answer
   x = 114,112.77