Finding the Fourth Proportional to 31,151.84, 42,989.42 and 17,004.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.84 : 42,989.42 = 17,004.70 : x
2. Step 2: Convert to fraction form
   31,151.84/42,989.42 = 17,004.70/x
3. Step 3: Cross multiply
   31,151.84x = 42,989.42 × 17,004.70
4. Step 4: Simplify right side
   31,151.84x = 731,021,890.30
5. Step 5: Solve for x
   x = 731,021,890.30/31,151.84
6. Step 6: Final answer
   x = 23,466.41