Finding the Fourth Proportional to 89.82, 123.94 and 73.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.82 : 123.94 = 73.42 : x
2. Step 2: Convert to fraction form
   89.82/123.94 = 73.42/x
3. Step 3: Cross multiply
   89.82x = 123.94 × 73.42
4. Step 4: Simplify right side
   89.82x = 9,099.67
5. Step 5: Solve for x
   x = 9,099.67/89.82
6. Step 6: Final answer
   x = 101.31