Finding the Fourth Proportional to 48,695.46, 72,991.89 and 20,608.98

Step by Step Solution

1. Step 1: Write the proportion equation
   48,695.46 : 72,991.89 = 20,608.98 : x
2. Step 2: Convert to fraction form
   48,695.46/72,991.89 = 20,608.98/x
3. Step 3: Cross multiply
   48,695.46x = 72,991.89 × 20,608.98
4. Step 4: Simplify right side
   48,695.46x = 1,504,288,401.17
5. Step 5: Solve for x
   x = 1,504,288,401.17/48,695.46
6. Step 6: Final answer
   x = 30,891.76