Finding the Fourth Proportional to 31,200.80, 43,057.04 and 17,772.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,200.80 : 43,057.04 = 17,772.05 : x
2. Step 2: Convert to fraction form
   31,200.80/43,057.04 = 17,772.05/x
3. Step 3: Cross multiply
   31,200.80x = 43,057.04 × 17,772.05
4. Step 4: Simplify right side
   31,200.80x = 765,211,563.59
5. Step 5: Solve for x
   x = 765,211,563.59/31,200.80
6. Step 6: Final answer
   x = 24,525.39