Finding the Fourth Proportional to 89.35, 123.01 and 67.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89.35 : 123.01 = 67.18 : x
2. Step 2: Convert to fraction form
   89.35/123.01 = 67.18/x
3. Step 3: Cross multiply
   89.35x = 123.01 × 67.18
4. Step 4: Simplify right side
   89.35x = 8,263.81
5. Step 5: Solve for x
   x = 8,263.81/89.35
6. Step 6: Final answer
   x = 92.49