Finding the Fourth Proportional to 142,515.52, 196,670.56 and 78,849.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,515.52 : 196,670.56 = 78,849.60 : x
2. Step 2: Convert to fraction form
   142,515.52/196,670.56 = 78,849.60/x
3. Step 3: Cross multiply
   142,515.52x = 196,670.56 × 78,849.60
4. Step 4: Simplify right side
   142,515.52x = 15,507,394,987.78
5. Step 5: Solve for x
   x = 15,507,394,987.78/142,515.52
6. Step 6: Final answer
   x = 108,811.97