Finding the Fourth Proportional to 105.27, 158.01 and 53.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105.27 : 158.01 = 53.96 : x
2. Step 2: Convert to fraction form
   105.27/158.01 = 53.96/x
3. Step 3: Cross multiply
   105.27x = 158.01 × 53.96
4. Step 4: Simplify right side
   105.27x = 8,525.43
5. Step 5: Solve for x
   x = 8,525.43/105.27
6. Step 6: Final answer
   x = 80.99