Finding the Fourth Proportional to 89.08, 133.43 and 42.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89.08 : 133.43 = 42.73 : x
2. Step 2: Convert to fraction form
   89.08/133.43 = 42.73/x
3. Step 3: Cross multiply
   89.08x = 133.43 × 42.73
4. Step 4: Simplify right side
   89.08x = 5,701.78
5. Step 5: Solve for x
   x = 5,701.78/89.08
6. Step 6: Final answer
   x = 64.01