Finding the Fourth Proportional to 111.24, 152.67 and 105.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111.24 : 152.67 = 105.30 : x
2. Step 2: Convert to fraction form
   111.24/152.67 = 105.30/x
3. Step 3: Cross multiply
   111.24x = 152.67 × 105.30
4. Step 4: Simplify right side
   111.24x = 16,076.15
5. Step 5: Solve for x
   x = 16,076.15/111.24
6. Step 6: Final answer
   x = 144.52