Finding the Fourth Proportional to 31,648.78, 43,673.55 and 17,305.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,648.78 : 43,673.55 = 17,305.76 : x
2. Step 2: Convert to fraction form
   31,648.78/43,673.55 = 17,305.76/x
3. Step 3: Cross multiply
   31,648.78x = 43,673.55 × 17,305.76
4. Step 4: Simplify right side
   31,648.78x = 755,804,083.83
5. Step 5: Solve for x
   x = 755,804,083.83/31,648.78
6. Step 6: Final answer
   x = 23,880.99