Finding the Fourth Proportional to 53,747.24, 80,620.61 and 13,766.15

Step by Step Solution

1. Step 1: Write the proportion equation
   53,747.24 : 80,620.61 = 13,766.15 : x
2. Step 2: Convert to fraction form
   53,747.24/80,620.61 = 13,766.15/x
3. Step 3: Cross multiply
   53,747.24x = 80,620.61 × 13,766.15
4. Step 4: Simplify right side
   53,747.24x = 1,109,834,938.42
5. Step 5: Solve for x
   x = 1,109,834,938.42/53,747.24
6. Step 6: Final answer
   x = 20,649.15