Finding the Fourth Proportional to 111.07, 166.59 and 63.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111.07 : 166.59 = 63.28 : x
2. Step 2: Convert to fraction form
   111.07/166.59 = 63.28/x
3. Step 3: Cross multiply
   111.07x = 166.59 × 63.28
4. Step 4: Simplify right side
   111.07x = 10,541.82
5. Step 5: Solve for x
   x = 10,541.82/111.07
6. Step 6: Final answer
   x = 94.91