Finding the Fourth Proportional to 53,840, 80,760.72 and 16,904

Step by Step Solution

1. Step 1: Write the proportion equation
   53,840 : 80,760.72 = 16,904 : x
2. Step 2: Convert to fraction form
   53,840/80,760.72 = 16,904/x
3. Step 3: Cross multiply
   53,840x = 80,760.72 × 16,904
4. Step 4: Simplify right side
   53,840x = 1,365,179,210.88
5. Step 5: Solve for x
   x = 1,365,179,210.88/53,840
6. Step 6: Final answer
   x = 25,356.23