Finding the Fourth Proportional to 53,802.50, 80,716.72 and 16,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,802.50 : 80,716.72 = 16,866.50 : x
2. Step 2: Convert to fraction form
   53,802.50/80,716.72 = 16,866.50/x
3. Step 3: Cross multiply
   53,802.50x = 80,716.72 × 16,866.50
4. Step 4: Simplify right side
   53,802.50x = 1,361,408,557.88
5. Step 5: Solve for x
   x = 1,361,408,557.88/53,802.50
6. Step 6: Final answer
   x = 25,303.82