Finding the Fourth Proportional to 105.40, 158.10 and 33.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105.40 : 158.10 = 33.25 : x
2. Step 2: Convert to fraction form
   105.40/158.10 = 33.25/x
3. Step 3: Cross multiply
   105.40x = 158.10 × 33.25
4. Step 4: Simplify right side
   105.40x = 5,256.83
5. Step 5: Solve for x
   x = 5,256.83/105.40
6. Step 6: Final answer
   x = 49.88