Finding the Fourth Proportional to 31,136.51, 42,969.33 and 17,709.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,136.51 : 42,969.33 = 17,709.69 : x
2. Step 2: Convert to fraction form
   31,136.51/42,969.33 = 17,709.69/x
3. Step 3: Cross multiply
   31,136.51x = 42,969.33 × 17,709.69
4. Step 4: Simplify right side
   31,136.51x = 760,973,641.74
5. Step 5: Solve for x
   x = 760,973,641.74/31,136.51
6. Step 6: Final answer
   x = 24,439.92