Finding the Fourth Proportional to 142,538.48, 196,700.16 and 78,876.24

Step by Step Solution

1. Step 1: Write the proportion equation
   142,538.48 : 196,700.16 = 78,876.24 : x
2. Step 2: Convert to fraction form
   142,538.48/196,700.16 = 78,876.24/x
3. Step 3: Cross multiply
   142,538.48x = 196,700.16 × 78,876.24
4. Step 4: Simplify right side
   142,538.48x = 15,514,969,028.20
5. Step 5: Solve for x
   x = 15,514,969,028.20/142,538.48
6. Step 6: Final answer
   x = 108,847.58