Finding the Fourth Proportional to 142,342.52, 196,425 and 78,676.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,342.52 : 196,425 = 78,676.52 : x
2. Step 2: Convert to fraction form
   142,342.52/196,425 = 78,676.52/x
3. Step 3: Cross multiply
   142,342.52x = 196,425 × 78,676.52
4. Step 4: Simplify right side
   142,342.52x = 15,454,034,458.88
5. Step 5: Solve for x
   x = 15,454,034,458.88/142,342.52
6. Step 6: Final answer
   x = 108,569.35