Finding the Fourth Proportional to 31,664.61, 43,697.42 and 17,518.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,664.61 : 43,697.42 = 17,518.37 : x
2. Step 2: Convert to fraction form
   31,664.61/43,697.42 = 17,518.37/x
3. Step 3: Cross multiply
   31,664.61x = 43,697.42 × 17,518.37
4. Step 4: Simplify right side
   31,664.61x = 765,507,265.53
5. Step 5: Solve for x
   x = 765,507,265.53/31,664.61
6. Step 6: Final answer
   x = 24,175.48