Finding the Fourth Proportional to 105.81, 158.72 and 32.70

Step by Step Solution

1. Step 1: Write the proportion equation
   105.81 : 158.72 = 32.70 : x
2. Step 2: Convert to fraction form
   105.81/158.72 = 32.70/x
3. Step 3: Cross multiply
   105.81x = 158.72 × 32.70
4. Step 4: Simplify right side
   105.81x = 5,189.87
5. Step 5: Solve for x
   x = 5,189.87/105.81
6. Step 6: Final answer
   x = 49.05