Finding the Fourth Proportional to 53,800.50, 80,713.71 and 16,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,800.50 : 80,713.71 = 16,864.50 : x
2. Step 2: Convert to fraction form
   53,800.50/80,713.71 = 16,864.50/x
3. Step 3: Cross multiply
   53,800.50x = 80,713.71 × 16,864.50
4. Step 4: Simplify right side
   53,800.50x = 1,361,196,362.30
5. Step 5: Solve for x
   x = 1,361,196,362.30/53,800.50
6. Step 6: Final answer
   x = 25,300.81