Finding the Fourth Proportional to 31,157.65, 42,995.94 and 17,728.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,157.65 : 42,995.94 = 17,728.63 : x
2. Step 2: Convert to fraction form
   31,157.65/42,995.94 = 17,728.63/x
3. Step 3: Cross multiply
   31,157.65x = 42,995.94 × 17,728.63
4. Step 4: Simplify right side
   31,157.65x = 762,259,111.76
5. Step 5: Solve for x
   x = 762,259,111.76/31,157.65
6. Step 6: Final answer
   x = 24,464.59