Finding the Fourth Proportional to 111.29, 153.46 and 67.61

Step by Step Solution

1. Step 1: Write the proportion equation
   111.29 : 153.46 = 67.61 : x
2. Step 2: Convert to fraction form
   111.29/153.46 = 67.61/x
3. Step 3: Cross multiply
   111.29x = 153.46 × 67.61
4. Step 4: Simplify right side
   111.29x = 10,375.90
5. Step 5: Solve for x
   x = 10,375.90/111.29
6. Step 6: Final answer
   x = 93.24