Finding the Fourth Proportional to 72.49, 99.98 and 58.67

Step by Step Solution

1. Step 1: Write the proportion equation
   72.49 : 99.98 = 58.67 : x
2. Step 2: Convert to fraction form
   72.49/99.98 = 58.67/x
3. Step 3: Cross multiply
   72.49x = 99.98 × 58.67
4. Step 4: Simplify right side
   72.49x = 5,865.83
5. Step 5: Solve for x
   x = 5,865.83/72.49
6. Step 6: Final answer
   x = 80.92