Finding the Fourth Proportional to 31,826.89, 43,919.88 and 17,680.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,826.89 : 43,919.88 = 17,680.63 : x
2. Step 2: Convert to fraction form
   31,826.89/43,919.88 = 17,680.63/x
3. Step 3: Cross multiply
   31,826.89x = 43,919.88 × 17,680.63
4. Step 4: Simplify right side
   31,826.89x = 776,531,147.92
5. Step 5: Solve for x
   x = 776,531,147.92/31,826.89
6. Step 6: Final answer
   x = 24,398.59