Finding the Fourth Proportional to 142,711.99, 196,949.03 and 79,049.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,711.99 : 196,949.03 = 79,049.78 : x
2. Step 2: Convert to fraction form
   142,711.99/196,949.03 = 79,049.78/x
3. Step 3: Cross multiply
   142,711.99x = 196,949.03 × 79,049.78
4. Step 4: Simplify right side
   142,711.99x = 15,568,777,492.71
5. Step 5: Solve for x
   x = 15,568,777,492.71/142,711.99
6. Step 6: Final answer
   x = 109,092.29