Finding the Fourth Proportional to 31,137.98, 42,971.36 and 17,711.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,137.98 : 42,971.36 = 17,711.16 : x
2. Step 2: Convert to fraction form
   31,137.98/42,971.36 = 17,711.16/x
3. Step 3: Cross multiply
   31,137.98x = 42,971.36 × 17,711.16
4. Step 4: Simplify right side
   31,137.98x = 761,072,632.38
5. Step 5: Solve for x
   x = 761,072,632.38/31,137.98
6. Step 6: Final answer
   x = 24,441.94