Finding the Fourth Proportional to 142,419.40, 196,530.52 and 78,753.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,419.40 : 196,530.52 = 78,753.04 : x
2. Step 2: Convert to fraction form
   142,419.40/196,530.52 = 78,753.04/x
3. Step 3: Cross multiply
   142,419.40x = 196,530.52 × 78,753.04
4. Step 4: Simplify right side
   142,419.40x = 15,477,375,902.78
5. Step 5: Solve for x
   x = 15,477,375,902.78/142,419.40
6. Step 6: Final answer
   x = 108,674.63