Finding the Fourth Proportional to 31,256.21, 43,133.59 and 17,109.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,256.21 : 43,133.59 = 17,109.13 : x
2. Step 2: Convert to fraction form
   31,256.21/43,133.59 = 17,109.13/x
3. Step 3: Cross multiply
   31,256.21x = 43,133.59 × 17,109.13
4. Step 4: Simplify right side
   31,256.21x = 737,978,198.68
5. Step 5: Solve for x
   x = 737,978,198.68/31,256.21
6. Step 6: Final answer
   x = 23,610.61