Finding the Fourth Proportional to 31,460.43, 43,415.59 and 17,120.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,460.43 : 43,415.59 = 17,120.38 : x
2. Step 2: Convert to fraction form
   31,460.43/43,415.59 = 17,120.38/x
3. Step 3: Cross multiply
   31,460.43x = 43,415.59 × 17,120.38
4. Step 4: Simplify right side
   31,460.43x = 743,291,247.38
5. Step 5: Solve for x
   x = 743,291,247.38/31,460.43
6. Step 6: Final answer
   x = 23,626.23