Finding the Fourth Proportional to 31,075.28, 42,884.88 and 17,647.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,075.28 : 42,884.88 = 17,647.12 : x
2. Step 2: Convert to fraction form
   31,075.28/42,884.88 = 17,647.12/x
3. Step 3: Cross multiply
   31,075.28x = 42,884.88 × 17,647.12
4. Step 4: Simplify right side
   31,075.28x = 756,794,623.55
5. Step 5: Solve for x
   x = 756,794,623.55/31,075.28
6. Step 6: Final answer
   x = 24,353.59