Finding the Fourth Proportional to 111.35, 166.82 and 63.11

Step by Step Solution

1. Step 1: Write the proportion equation
   111.35 : 166.82 = 63.11 : x
2. Step 2: Convert to fraction form
   111.35/166.82 = 63.11/x
3. Step 3: Cross multiply
   111.35x = 166.82 × 63.11
4. Step 4: Simplify right side
   111.35x = 10,527.69
5. Step 5: Solve for x
   x = 10,527.69/111.35
6. Step 6: Final answer
   x = 94.55