Finding the Fourth Proportional to 104.42, 144.12 and 71.69

Step by Step Solution

1. Step 1: Write the proportion equation
   104.42 : 144.12 = 71.69 : x
2. Step 2: Convert to fraction form
   104.42/144.12 = 71.69/x
3. Step 3: Cross multiply
   104.42x = 144.12 × 71.69
4. Step 4: Simplify right side
   104.42x = 10,331.51
5. Step 5: Solve for x
   x = 10,331.51/104.42
6. Step 6: Final answer
   x = 98.94