Finding the Fourth Proportional to 89.04, 122.83 and 61.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.04 : 122.83 = 61.42 : x
2. Step 2: Convert to fraction form
   89.04/122.83 = 61.42/x
3. Step 3: Cross multiply
   89.04x = 122.83 × 61.42
4. Step 4: Simplify right side
   89.04x = 7,543.91
5. Step 5: Solve for x
   x = 7,543.91/89.04
6. Step 6: Final answer
   x = 84.73