Finding the Fourth Proportional to 31,868.79, 43,977.32 and 17,718.87

Step by Step Solution

1. Step 1: Write the proportion equation
   31,868.79 : 43,977.32 = 17,718.87 : x
2. Step 2: Convert to fraction form
   31,868.79/43,977.32 = 17,718.87/x
3. Step 3: Cross multiply
   31,868.79x = 43,977.32 × 17,718.87
4. Step 4: Simplify right side
   31,868.79x = 779,228,327.43
5. Step 5: Solve for x
   x = 779,228,327.43/31,868.79
6. Step 6: Final answer
   x = 24,451.14