Finding the Fourth Proportional to 31,155.42, 42,993.81 and 17,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.42 : 42,993.81 = 17,008.50 : x
2. Step 2: Convert to fraction form
   31,155.42/42,993.81 = 17,008.50/x
3. Step 3: Cross multiply
   31,155.42x = 42,993.81 × 17,008.50
4. Step 4: Simplify right side
   31,155.42x = 731,260,217.39
5. Step 5: Solve for x
   x = 731,260,217.39/31,155.42
6. Step 6: Final answer
   x = 23,471.36