Finding the Fourth Proportional to 111.94, 167.78 and 63.88

Step by Step Solution

1. Step 1: Write the proportion equation
   111.94 : 167.78 = 63.88 : x
2. Step 2: Convert to fraction form
   111.94/167.78 = 63.88/x
3. Step 3: Cross multiply
   111.94x = 167.78 × 63.88
4. Step 4: Simplify right side
   111.94x = 10,717.79
5. Step 5: Solve for x
   x = 10,717.79/111.94
6. Step 6: Final answer
   x = 95.75