Finding the Fourth Proportional to 142,744.38, 196,979.49 and 79,078.38

Step by Step Solution

1. Step 1: Write the proportion equation
   142,744.38 : 196,979.49 = 79,078.38 : x
2. Step 2: Convert to fraction form
   142,744.38/196,979.49 = 79,078.38/x
3. Step 3: Cross multiply
   142,744.38x = 196,979.49 × 79,078.38
4. Step 4: Simplify right side
   142,744.38x = 15,576,818,962.43
5. Step 5: Solve for x
   x = 15,576,818,962.43/142,744.38
6. Step 6: Final answer
   x = 109,123.87