Finding the Fourth Proportional to 31,136.24, 42,968.96 and 17,709.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,136.24 : 42,968.96 = 17,709.43 : x
2. Step 2: Convert to fraction form
   31,136.24/42,968.96 = 17,709.43/x
3. Step 3: Cross multiply
   31,136.24x = 42,968.96 × 17,709.43
4. Step 4: Simplify right side
   31,136.24x = 760,955,681.87
5. Step 5: Solve for x
   x = 760,955,681.87/31,136.24
6. Step 6: Final answer
   x = 24,439.55