Finding the Fourth Proportional to 71.31, 107.04 and 35.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71.31 : 107.04 = 35.31 : x
2. Step 2: Convert to fraction form
   71.31/107.04 = 35.31/x
3. Step 3: Cross multiply
   71.31x = 107.04 × 35.31
4. Step 4: Simplify right side
   71.31x = 3,779.58
5. Step 5: Solve for x
   x = 3,779.58/71.31
6. Step 6: Final answer
   x = 53.00