Finding the Fourth Proportional to 30,631.43, 42,270.86 and 17,019.18

Step by Step Solution

1. Step 1: Write the proportion equation
   30,631.43 : 42,270.86 = 17,019.18 : x
2. Step 2: Convert to fraction form
   30,631.43/42,270.86 = 17,019.18/x
3. Step 3: Cross multiply
   30,631.43x = 42,270.86 × 17,019.18
4. Step 4: Simplify right side
   30,631.43x = 719,415,290.00
5. Step 5: Solve for x
   x = 719,415,290.00/30,631.43
6. Step 6: Final answer
   x = 23,486.18