Finding the Fourth Proportional to 89.56, 134.15 and 67.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89.56 : 134.15 = 67.92 : x
2. Step 2: Convert to fraction form
   89.56/134.15 = 67.92/x
3. Step 3: Cross multiply
   89.56x = 134.15 × 67.92
4. Step 4: Simplify right side
   89.56x = 9,111.47
5. Step 5: Solve for x
   x = 9,111.47/89.56
6. Step 6: Final answer
   x = 101.74