Finding the Fourth Proportional to 139,676, 192,719.26 and 82,317.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,676 : 192,719.26 = 82,317.61 : x
2. Step 2: Convert to fraction form
   139,676/192,719.26 = 82,317.61/x
3. Step 3: Cross multiply
   139,676x = 192,719.26 × 82,317.61
4. Step 4: Simplify right side
   139,676x = 15,864,188,884.17
5. Step 5: Solve for x
   x = 15,864,188,884.17/139,676
6. Step 6: Final answer
   x = 113,578.49