Finding the Fourth Proportional to 54,036.94, 81,059.30 and 20,757

Step by Step Solution

1. Step 1: Write the proportion equation
   54,036.94 : 81,059.30 = 20,757 : x
2. Step 2: Convert to fraction form
   54,036.94/81,059.30 = 20,757/x
3. Step 3: Cross multiply
   54,036.94x = 81,059.30 × 20,757
4. Step 4: Simplify right side
   54,036.94x = 1,682,547,890.10
5. Step 5: Solve for x
   x = 1,682,547,890.10/54,036.94
6. Step 6: Final answer
   x = 31,136.99