Finding the Fourth Proportional to 142,862.71, 197,155.34 and 79,196.71

Step by Step Solution

1. Step 1: Write the proportion equation
   142,862.71 : 197,155.34 = 79,196.71 : x
2. Step 2: Convert to fraction form
   142,862.71/197,155.34 = 79,196.71/x
3. Step 3: Cross multiply
   142,862.71x = 197,155.34 × 79,196.71
4. Step 4: Simplify right side
   142,862.71x = 15,614,053,890.95
5. Step 5: Solve for x
   x = 15,614,053,890.95/142,862.71
6. Step 6: Final answer
   x = 109,294.12