Finding the Fourth Proportional to 72.84, 100.56 and 43.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72.84 : 100.56 = 43.74 : x
2. Step 2: Convert to fraction form
   72.84/100.56 = 43.74/x
3. Step 3: Cross multiply
   72.84x = 100.56 × 43.74
4. Step 4: Simplify right side
   72.84x = 4,398.49
5. Step 5: Solve for x
   x = 4,398.49/72.84
6. Step 6: Final answer
   x = 60.39