Finding the Fourth Proportional to 142,150.28, 196,167.29 and 78,488.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,150.28 : 196,167.29 = 78,488.06 : x
2. Step 2: Convert to fraction form
   142,150.28/196,167.29 = 78,488.06/x
3. Step 3: Cross multiply
   142,150.28x = 196,167.29 × 78,488.06
4. Step 4: Simplify right side
   142,150.28x = 15,396,788,654.28
5. Step 5: Solve for x
   x = 15,396,788,654.28/142,150.28
6. Step 6: Final answer
   x = 108,313.46