Finding the Fourth Proportional to 111.91, 167.81 and 63.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.91 : 167.81 = 63.16 : x
2. Step 2: Convert to fraction form
   111.91/167.81 = 63.16/x
3. Step 3: Cross multiply
   111.91x = 167.81 × 63.16
4. Step 4: Simplify right side
   111.91x = 10,598.38
5. Step 5: Solve for x
   x = 10,598.38/111.91
6. Step 6: Final answer
   x = 94.71