Finding the Fourth Proportional to 72.61, 108.91 and 23.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72.61 : 108.91 = 23.86 : x
2. Step 2: Convert to fraction form
   72.61/108.91 = 23.86/x
3. Step 3: Cross multiply
   72.61x = 108.91 × 23.86
4. Step 4: Simplify right side
   72.61x = 2,598.59
5. Step 5: Solve for x
   x = 2,598.59/72.61
6. Step 6: Final answer
   x = 35.79