Finding the Fourth Proportional to 55,196.67, 82,807.31 and 20,136.33

Step by Step Solution

1. Step 1: Write the proportion equation
   55,196.67 : 82,807.31 = 20,136.33 : x
2. Step 2: Convert to fraction form
   55,196.67/82,807.31 = 20,136.33/x
3. Step 3: Cross multiply
   55,196.67x = 82,807.31 × 20,136.33
4. Step 4: Simplify right side
   55,196.67x = 1,667,435,370.91
5. Step 5: Solve for x
   x = 1,667,435,370.91/55,196.67
6. Step 6: Final answer
   x = 30,208.98