Finding the Fourth Proportional to 111.63, 152.04 and 109.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111.63 : 152.04 = 109.38 : x
2. Step 2: Convert to fraction form
   111.63/152.04 = 109.38/x
3. Step 3: Cross multiply
   111.63x = 152.04 × 109.38
4. Step 4: Simplify right side
   111.63x = 16,630.14
5. Step 5: Solve for x
   x = 16,630.14/111.63
6. Step 6: Final answer
   x = 148.98