Finding the Fourth Proportional to 72.59, 100.15 and 43.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72.59 : 100.15 = 43.48 : x
2. Step 2: Convert to fraction form
   72.59/100.15 = 43.48/x
3. Step 3: Cross multiply
   72.59x = 100.15 × 43.48
4. Step 4: Simplify right side
   72.59x = 4,354.52
5. Step 5: Solve for x
   x = 4,354.52/72.59
6. Step 6: Final answer
   x = 59.99