Finding the Fourth Proportional to 105.54, 158.34 and 44.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105.54 : 158.34 = 44.72 : x
2. Step 2: Convert to fraction form
   105.54/158.34 = 44.72/x
3. Step 3: Cross multiply
   105.54x = 158.34 × 44.72
4. Step 4: Simplify right side
   105.54x = 7,080.96
5. Step 5: Solve for x
   x = 7,080.96/105.54
6. Step 6: Final answer
   x = 67.09