Finding the Fourth Proportional to 72.51, 108.78 and 24.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72.51 : 108.78 = 24.42 : x
2. Step 2: Convert to fraction form
   72.51/108.78 = 24.42/x
3. Step 3: Cross multiply
   72.51x = 108.78 × 24.42
4. Step 4: Simplify right side
   72.51x = 2,656.41
5. Step 5: Solve for x
   x = 2,656.41/72.51
6. Step 6: Final answer
   x = 36.64