Finding the Fourth Proportional to 90.06, 134.82 and 67.34

Step by Step Solution

1. Step 1: Write the proportion equation
   90.06 : 134.82 = 67.34 : x
2. Step 2: Convert to fraction form
   90.06/134.82 = 67.34/x
3. Step 3: Cross multiply
   90.06x = 134.82 × 67.34
4. Step 4: Simplify right side
   90.06x = 9,078.78
5. Step 5: Solve for x
   x = 9,078.78/90.06
6. Step 6: Final answer
   x = 100.81