Finding the Fourth Proportional to 89.55, 123.31 and 67.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89.55 : 123.31 = 67.46 : x
2. Step 2: Convert to fraction form
   89.55/123.31 = 67.46/x
3. Step 3: Cross multiply
   89.55x = 123.31 × 67.46
4. Step 4: Simplify right side
   89.55x = 8,317.58
5. Step 5: Solve for x
   x = 8,317.58/89.55
6. Step 6: Final answer
   x = 92.88