Finding the Fourth Proportional to 139,735.71, 192,860.42 and 82,371.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,735.71 : 192,860.42 = 82,371.61 : x
2. Step 2: Convert to fraction form
   139,735.71/192,860.42 = 82,371.61/x
3. Step 3: Cross multiply
   139,735.71x = 192,860.42 × 82,371.61
4. Step 4: Simplify right side
   139,735.71x = 15,886,223,340.40
5. Step 5: Solve for x
   x = 15,886,223,340.40/139,735.71
6. Step 6: Final answer
   x = 113,687.64