Finding the Fourth Proportional to 142,821.92, 197,086.42 and 79,155.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,821.92 : 197,086.42 = 79,155.92 : x
2. Step 2: Convert to fraction form
   142,821.92/197,086.42 = 79,155.92/x
3. Step 3: Cross multiply
   142,821.92x = 197,086.42 × 79,155.92
4. Step 4: Simplify right side
   142,821.92x = 15,600,556,894.61
5. Step 5: Solve for x
   x = 15,600,556,894.61/142,821.92
6. Step 6: Final answer
   x = 109,230.83