Finding the Fourth Proportional to 31,870.64, 43,979.67 and 17,723.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.64 : 43,979.67 = 17,723.18 : x
2. Step 2: Convert to fraction form
   31,870.64/43,979.67 = 17,723.18/x
3. Step 3: Cross multiply
   31,870.64x = 43,979.67 × 17,723.18
4. Step 4: Simplify right side
   31,870.64x = 779,459,387.85
5. Step 5: Solve for x
   x = 779,459,387.85/31,870.64
6. Step 6: Final answer
   x = 24,456.98