Finding the Fourth Proportional to 139,768.56, 192,854.98 and 82,425.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,768.56 : 192,854.98 = 82,425.87 : x
2. Step 2: Convert to fraction form
   139,768.56/192,854.98 = 82,425.87/x
3. Step 3: Cross multiply
   139,768.56x = 192,854.98 × 82,425.87
4. Step 4: Simplify right side
   139,768.56x = 15,896,239,510.33
5. Step 5: Solve for x
   x = 15,896,239,510.33/139,768.56
6. Step 6: Final answer
   x = 113,732.58