Finding the Fourth Proportional to 105.27, 158.18 and 79.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105.27 : 158.18 = 79.62 : x
2. Step 2: Convert to fraction form
   105.27/158.18 = 79.62/x
3. Step 3: Cross multiply
   105.27x = 158.18 × 79.62
4. Step 4: Simplify right side
   105.27x = 12,593.89
5. Step 5: Solve for x
   x = 12,593.89/105.27
6. Step 6: Final answer
   x = 119.63