Finding the Fourth Proportional to 40,859.21, 56,406.71 and 28,262.09

Step by Step Solution

1. Step 1: Write the proportion equation
   40,859.21 : 56,406.71 = 28,262.09 : x
2. Step 2: Convert to fraction form
   40,859.21/56,406.71 = 28,262.09/x
3. Step 3: Cross multiply
   40,859.21x = 56,406.71 × 28,262.09
4. Step 4: Simplify right side
   40,859.21x = 1,594,171,514.62
5. Step 5: Solve for x
   x = 1,594,171,514.62/40,859.21
6. Step 6: Final answer
   x = 39,016.21