Finding the Fourth Proportional to 31,425.63, 43,368.22 and 17,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,425.63 : 43,368.22 = 17,086.42 : x
2. Step 2: Convert to fraction form
   31,425.63/43,368.22 = 17,086.42/x
3. Step 3: Cross multiply
   31,425.63x = 43,368.22 × 17,086.42
4. Step 4: Simplify right side
   31,425.63x = 741,007,621.57
5. Step 5: Solve for x
   x = 741,007,621.57/31,425.63
6. Step 6: Final answer
   x = 23,579.72