Finding the Fourth Proportional to 72.51, 107.88 and 72.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72.51 : 107.88 = 72.27 : x
2. Step 2: Convert to fraction form
   72.51/107.88 = 72.27/x
3. Step 3: Cross multiply
   72.51x = 107.88 × 72.27
4. Step 4: Simplify right side
   72.51x = 7,796.49
5. Step 5: Solve for x
   x = 7,796.49/72.51
6. Step 6: Final answer
   x = 107.52