Finding the Fourth Proportional to 105.96, 158.52 and 105.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105.96 : 158.52 = 105.18 : x
2. Step 2: Convert to fraction form
   105.96/158.52 = 105.18/x
3. Step 3: Cross multiply
   105.96x = 158.52 × 105.18
4. Step 4: Simplify right side
   105.96x = 16,673.13
5. Step 5: Solve for x
   x = 16,673.13/105.96
6. Step 6: Final answer
   x = 157.35