Finding the Fourth Proportional to 31,057.63, 42,860.05 and 17,629.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.63 : 42,860.05 = 17,629.30 : x
2. Step 2: Convert to fraction form
   31,057.63/42,860.05 = 17,629.30/x
3. Step 3: Cross multiply
   31,057.63x = 42,860.05 × 17,629.30
4. Step 4: Simplify right side
   31,057.63x = 755,592,788.13
5. Step 5: Solve for x
   x = 755,592,788.13/31,057.63
6. Step 6: Final answer
   x = 24,328.73