Finding the Fourth Proportional to 105.15, 157.69 and 33.03

Step by Step Solution

1. Step 1: Write the proportion equation
   105.15 : 157.69 = 33.03 : x
2. Step 2: Convert to fraction form
   105.15/157.69 = 33.03/x
3. Step 3: Cross multiply
   105.15x = 157.69 × 33.03
4. Step 4: Simplify right side
   105.15x = 5,208.50
5. Step 5: Solve for x
   x = 5,208.50/105.15
6. Step 6: Final answer
   x = 49.53