Finding the Fourth Proportional to 72.69, 100.41 and 52.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72.69 : 100.41 = 52.05 : x
2. Step 2: Convert to fraction form
   72.69/100.41 = 52.05/x
3. Step 3: Cross multiply
   72.69x = 100.41 × 52.05
4. Step 4: Simplify right side
   72.69x = 5,226.34
5. Step 5: Solve for x
   x = 5,226.34/72.69
6. Step 6: Final answer
   x = 71.90