Finding the Fourth Proportional to 142,756.48, 196,987.52 and 79,078.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,756.48 : 196,987.52 = 79,078.08 : x
2. Step 2: Convert to fraction form
   142,756.48/196,987.52 = 79,078.08/x
3. Step 3: Cross multiply
   142,756.48x = 196,987.52 × 79,078.08
4. Step 4: Simplify right side
   142,756.48x = 15,577,394,865.56
5. Step 5: Solve for x
   x = 15,577,394,865.56/142,756.48
6. Step 6: Final answer
   x = 109,118.65