Finding the Fourth Proportional to 31,040, 42,836.55 and 17,611.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,040 : 42,836.55 = 17,611.28 : x
2. Step 2: Convert to fraction form
   31,040/42,836.55 = 17,611.28/x
3. Step 3: Cross multiply
   31,040x = 42,836.55 × 17,611.28
4. Step 4: Simplify right side
   31,040x = 754,406,476.28
5. Step 5: Solve for x
   x = 754,406,476.28/31,040
6. Step 6: Final answer
   x = 24,304.33