Finding the Fourth Proportional to 142,685, 196,904.88 and 82,255.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,685 : 196,904.88 = 82,255.31 : x
2. Step 2: Convert to fraction form
   142,685/196,904.88 = 82,255.31/x
3. Step 3: Cross multiply
   142,685x = 196,904.88 × 82,255.31
4. Step 4: Simplify right side
   142,685x = 16,196,471,944.91
5. Step 5: Solve for x
   x = 16,196,471,944.91/142,685
6. Step 6: Final answer
   x = 113,512.09