Finding the Fourth Proportional to 142,434.69, 196,578.48 and 82,007.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,434.69 : 196,578.48 = 82,007.88 : x
2. Step 2: Convert to fraction form
   142,434.69/196,578.48 = 82,007.88/x
3. Step 3: Cross multiply
   142,434.69x = 196,578.48 × 82,007.88
4. Step 4: Simplify right side
   142,434.69x = 16,120,984,398.42
5. Step 5: Solve for x
   x = 16,120,984,398.42/142,434.69
6. Step 6: Final answer
   x = 113,181.59