Finding the Fourth Proportional to 72.32, 107.84 and 71.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72.32 : 107.84 = 71.10 : x
2. Step 2: Convert to fraction form
   72.32/107.84 = 71.10/x
3. Step 3: Cross multiply
   72.32x = 107.84 × 71.10
4. Step 4: Simplify right side
   72.32x = 7,667.60
5. Step 5: Solve for x
   x = 7,667.60/72.32
6. Step 6: Final answer
   x = 106.03