Finding the Fourth Proportional to 31,137.63, 42,971.22 and 17,711.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,137.63 : 42,971.22 = 17,711.25 : x
2. Step 2: Convert to fraction form
   31,137.63/42,971.22 = 17,711.25/x
3. Step 3: Cross multiply
   31,137.63x = 42,971.22 × 17,711.25
4. Step 4: Simplify right side
   31,137.63x = 761,074,020.23
5. Step 5: Solve for x
   x = 761,074,020.23/31,137.63
6. Step 6: Final answer
   x = 24,442.26