Finding the Fourth Proportional to 105.47, 158.19 and 33.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105.47 : 158.19 = 33.31 : x
2. Step 2: Convert to fraction form
   105.47/158.19 = 33.31/x
3. Step 3: Cross multiply
   105.47x = 158.19 × 33.31
4. Step 4: Simplify right side
   105.47x = 5,269.75
5. Step 5: Solve for x
   x = 5,269.75/105.47
6. Step 6: Final answer
   x = 49.96