Finding the Fourth Proportional to 31,157.39, 42,995.57 and 17,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,157.39 : 42,995.57 = 17,007.50 : x
2. Step 2: Convert to fraction form
   31,157.39/42,995.57 = 17,007.50/x
3. Step 3: Cross multiply
   31,157.39x = 42,995.57 × 17,007.50
4. Step 4: Simplify right side
   31,157.39x = 731,246,856.76
5. Step 5: Solve for x
   x = 731,246,856.76/31,157.39
6. Step 6: Final answer
   x = 23,469.46