Finding the Fourth Proportional to 31,075.21, 42,882.31 and 17,644.71

Step by Step Solution

1. Step 1: Write the proportion equation
   31,075.21 : 42,882.31 = 17,644.71 : x
2. Step 2: Convert to fraction form
   31,075.21/42,882.31 = 17,644.71/x
3. Step 3: Cross multiply
   31,075.21x = 42,882.31 × 17,644.71
4. Step 4: Simplify right side
   31,075.21x = 756,645,924.08
5. Step 5: Solve for x
   x = 756,645,924.08/31,075.21
6. Step 6: Final answer
   x = 24,348.86