Finding the Fourth Proportional to 105.72, 158.59 and 32.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105.72 : 158.59 = 32.60 : x
2. Step 2: Convert to fraction form
   105.72/158.59 = 32.60/x
3. Step 3: Cross multiply
   105.72x = 158.59 × 32.60
4. Step 4: Simplify right side
   105.72x = 5,170.47
5. Step 5: Solve for x
   x = 5,170.47/105.72
6. Step 6: Final answer
   x = 48.91