Finding the Fourth Proportional to 105.35, 158.00 and 33.21

Step by Step Solution

1. Step 1: Write the proportion equation
   105.35 : 158.00 = 33.21 : x
2. Step 2: Convert to fraction form
   105.35/158.00 = 33.21/x
3. Step 3: Cross multiply
   105.35x = 158.00 × 33.21
4. Step 4: Simplify right side
   105.35x = 5,247.01
5. Step 5: Solve for x
   x = 5,247.01/105.35
6. Step 6: Final answer
   x = 49.81