Finding the Fourth Proportional to 142,514.72, 196,656.24 and 78,843.68

Step by Step Solution

1. Step 1: Write the proportion equation
   142,514.72 : 196,656.24 = 78,843.68 : x
2. Step 2: Convert to fraction form
   142,514.72/196,656.24 = 78,843.68/x
3. Step 3: Cross multiply
   142,514.72x = 196,656.24 × 78,843.68
4. Step 4: Simplify right side
   142,514.72x = 15,505,101,656.56
5. Step 5: Solve for x
   x = 15,505,101,656.56/142,514.72
6. Step 6: Final answer
   x = 108,796.49