Finding the Fourth Proportional to 72.71, 109.00 and 49.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72.71 : 109.00 = 49.58 : x
2. Step 2: Convert to fraction form
   72.71/109.00 = 49.58/x
3. Step 3: Cross multiply
   72.71x = 109.00 × 49.58
4. Step 4: Simplify right side
   72.71x = 5,403.87
5. Step 5: Solve for x
   x = 5,403.87/72.71
6. Step 6: Final answer
   x = 74.32