Finding the Fourth Proportional to 72.88, 100.59 and 43.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72.88 : 100.59 = 43.79 : x
2. Step 2: Convert to fraction form
   72.88/100.59 = 43.79/x
3. Step 3: Cross multiply
   72.88x = 100.59 × 43.79
4. Step 4: Simplify right side
   72.88x = 4,404.84
5. Step 5: Solve for x
   x = 4,404.84/72.88
6. Step 6: Final answer
   x = 60.44