Finding the Fourth Proportional to 104.00, 143.42 and 71.19

Step by Step Solution

1. Step 1: Write the proportion equation
   104.00 : 143.42 = 71.19 : x
2. Step 2: Convert to fraction form
   104.00/143.42 = 71.19/x
3. Step 3: Cross multiply
   104.00x = 143.42 × 71.19
4. Step 4: Simplify right side
   104.00x = 10,209.71
5. Step 5: Solve for x
   x = 10,209.71/104.00
6. Step 6: Final answer
   x = 98.18