Finding the Fourth Proportional to 111.27, 153.56 and 62.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.27 : 153.56 = 62.16 : x
2. Step 2: Convert to fraction form
   111.27/153.56 = 62.16/x
3. Step 3: Cross multiply
   111.27x = 153.56 × 62.16
4. Step 4: Simplify right side
   111.27x = 9,544.52
5. Step 5: Solve for x
   x = 9,544.52/111.27
6. Step 6: Final answer
   x = 85.78