Finding the Fourth Proportional to 81.08, 111.89 and 67.94

Step by Step Solution

1. Step 1: Write the proportion equation
   81.08 : 111.89 = 67.94 : x
2. Step 2: Convert to fraction form
   81.08/111.89 = 67.94/x
3. Step 3: Cross multiply
   81.08x = 111.89 × 67.94
4. Step 4: Simplify right side
   81.08x = 7,601.81
5. Step 5: Solve for x
   x = 7,601.81/81.08
6. Step 6: Final answer
   x = 93.76