Finding the Fourth Proportional to 54,749.34, 82,136.31 and 19,689

Step by Step Solution

1. Step 1: Write the proportion equation
   54,749.34 : 82,136.31 = 19,689 : x
2. Step 2: Convert to fraction form
   54,749.34/82,136.31 = 19,689/x
3. Step 3: Cross multiply
   54,749.34x = 82,136.31 × 19,689
4. Step 4: Simplify right side
   54,749.34x = 1,617,181,807.59
5. Step 5: Solve for x
   x = 1,617,181,807.59/54,749.34
6. Step 6: Final answer
   x = 29,537.92