Finding the Fourth Proportional to 72.71, 109.23 and 47.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72.71 : 109.23 = 47.08 : x
2. Step 2: Convert to fraction form
   72.71/109.23 = 47.08/x
3. Step 3: Cross multiply
   72.71x = 109.23 × 47.08
4. Step 4: Simplify right side
   72.71x = 5,142.10
5. Step 5: Solve for x
   x = 5,142.10/72.71
6. Step 6: Final answer
   x = 70.73