Finding the Fourth Proportional to 40,784.28, 56,287.91 and 22,880.42

Step by Step Solution

1. Step 1: Write the proportion equation
   40,784.28 : 56,287.91 = 22,880.42 : x
2. Step 2: Convert to fraction form
   40,784.28/56,287.91 = 22,880.42/x
3. Step 3: Cross multiply
   40,784.28x = 56,287.91 × 22,880.42
4. Step 4: Simplify right side
   40,784.28x = 1,287,891,021.72
5. Step 5: Solve for x
   x = 1,287,891,021.72/40,784.28
6. Step 6: Final answer
   x = 31,578.12