Finding the Fourth Proportional to 72.72, 100.35 and 58.14

Step by Step Solution

1. Step 1: Write the proportion equation
   72.72 : 100.35 = 58.14 : x
2. Step 2: Convert to fraction form
   72.72/100.35 = 58.14/x
3. Step 3: Cross multiply
   72.72x = 100.35 × 58.14
4. Step 4: Simplify right side
   72.72x = 5,834.35
5. Step 5: Solve for x
   x = 5,834.35/72.72
6. Step 6: Final answer
   x = 80.23