Finding the Fourth Proportional to 31,145.50, 42,981.79 and 17,716.41

Step by Step Solution

1. Step 1: Write the proportion equation
   31,145.50 : 42,981.79 = 17,716.41 : x
2. Step 2: Convert to fraction form
   31,145.50/42,981.79 = 17,716.41/x
3. Step 3: Cross multiply
   31,145.50x = 42,981.79 × 17,716.41
4. Step 4: Simplify right side
   31,145.50x = 761,483,014.17
5. Step 5: Solve for x
   x = 761,483,014.17/31,145.50
6. Step 6: Final answer
   x = 24,449.21