Finding the Fourth Proportional to 89.42, 123.40 and 67.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89.42 : 123.40 = 67.62 : x
2. Step 2: Convert to fraction form
   89.42/123.40 = 67.62/x
3. Step 3: Cross multiply
   89.42x = 123.40 × 67.62
4. Step 4: Simplify right side
   89.42x = 8,344.31
5. Step 5: Solve for x
   x = 8,344.31/89.42
6. Step 6: Final answer
   x = 93.32