Finding the Fourth Proportional to 31,870.70, 43,977.30 and 17,720.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.70 : 43,977.30 = 17,720.82 : x
2. Step 2: Convert to fraction form
   31,870.70/43,977.30 = 17,720.82/x
3. Step 3: Cross multiply
   31,870.70x = 43,977.30 × 17,720.82
4. Step 4: Simplify right side
   31,870.70x = 779,313,817.39
5. Step 5: Solve for x
   x = 779,313,817.39/31,870.70
6. Step 6: Final answer
   x = 24,452.36