Finding the Fourth Proportional to 105.71, 158.55 and 33.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105.71 : 158.55 = 33.57 : x
2. Step 2: Convert to fraction form
   105.71/158.55 = 33.57/x
3. Step 3: Cross multiply
   105.71x = 158.55 × 33.57
4. Step 4: Simplify right side
   105.71x = 5,322.52
5. Step 5: Solve for x
   x = 5,322.52/105.71
6. Step 6: Final answer
   x = 50.35