Finding the Fourth Proportional to 72.61, 100.18 and 43.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72.61 : 100.18 = 43.49 : x
2. Step 2: Convert to fraction form
   72.61/100.18 = 43.49/x
3. Step 3: Cross multiply
   72.61x = 100.18 × 43.49
4. Step 4: Simplify right side
   72.61x = 4,356.83
5. Step 5: Solve for x
   x = 4,356.83/72.61
6. Step 6: Final answer
   x = 60.00