Finding the Fourth Proportional to 104.42, 144.01 and 71.67

Step by Step Solution

1. Step 1: Write the proportion equation
   104.42 : 144.01 = 71.67 : x
2. Step 2: Convert to fraction form
   104.42/144.01 = 71.67/x
3. Step 3: Cross multiply
   104.42x = 144.01 × 71.67
4. Step 4: Simplify right side
   104.42x = 10,321.20
5. Step 5: Solve for x
   x = 10,321.20/104.42
6. Step 6: Final answer
   x = 98.84