Finding the Fourth Proportional to 89.28, 123.24 and 67.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89.28 : 123.24 = 67.62 : x
2. Step 2: Convert to fraction form
   89.28/123.24 = 67.62/x
3. Step 3: Cross multiply
   89.28x = 123.24 × 67.62
4. Step 4: Simplify right side
   89.28x = 8,333.49
5. Step 5: Solve for x
   x = 8,333.49/89.28
6. Step 6: Final answer
   x = 93.34