Finding the Fourth Proportional to 53,738.49, 80,608.50 and 20,460.38

Step by Step Solution

1. Step 1: Write the proportion equation
   53,738.49 : 80,608.50 = 20,460.38 : x
2. Step 2: Convert to fraction form
   53,738.49/80,608.50 = 20,460.38/x
3. Step 3: Cross multiply
   53,738.49x = 80,608.50 × 20,460.38
4. Step 4: Simplify right side
   53,738.49x = 1,649,280,061.46
5. Step 5: Solve for x
   x = 1,649,280,061.46/53,738.49
6. Step 6: Final answer
   x = 30,690.85