Finding the Fourth Proportional to 31,281.14, 43,166.30 and 17,131.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,281.14 : 43,166.30 = 17,131.25 : x
2. Step 2: Convert to fraction form
   31,281.14/43,166.30 = 17,131.25/x
3. Step 3: Cross multiply
   31,281.14x = 43,166.30 × 17,131.25
4. Step 4: Simplify right side
   31,281.14x = 739,492,375.39
5. Step 5: Solve for x
   x = 739,492,375.39/31,281.14
6. Step 6: Final answer
   x = 23,640.20