Finding the Fourth Proportional to 142,568.15, 196,753.17 and 82,137.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142,568.15 : 196,753.17 = 82,137.69 : x
2. Step 2: Convert to fraction form
   142,568.15/196,753.17 = 82,137.69/x
3. Step 3: Cross multiply
   142,568.15x = 196,753.17 × 82,137.69
4. Step 4: Simplify right side
   142,568.15x = 16,160,850,883.98
5. Step 5: Solve for x
   x = 16,160,850,883.98/142,568.15
6. Step 6: Final answer
   x = 113,355.27