Finding the Fourth Proportional to 31,870.18, 43,980.90 and 17,722.90

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.18 : 43,980.90 = 17,722.90 : x
2. Step 2: Convert to fraction form
   31,870.18/43,980.90 = 17,722.90/x
3. Step 3: Cross multiply
   31,870.18x = 43,980.90 × 17,722.90
4. Step 4: Simplify right side
   31,870.18x = 779,469,092.61
5. Step 5: Solve for x
   x = 779,469,092.61/31,870.18
6. Step 6: Final answer
   x = 24,457.63