Finding the Fourth Proportional to 31,136.62, 42,969.48 and 17,709.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,136.62 : 42,969.48 = 17,709.81 : x
2. Step 2: Convert to fraction form
   31,136.62/42,969.48 = 17,709.81/x
3. Step 3: Cross multiply
   31,136.62x = 42,969.48 × 17,709.81
4. Step 4: Simplify right side
   31,136.62x = 760,981,111.75
5. Step 5: Solve for x
   x = 760,981,111.75/31,136.62
6. Step 6: Final answer
   x = 24,440.07