Finding the Fourth Proportional to 57,852.33, 86,785.50 and 20,404.74

Step by Step Solution

1. Step 1: Write the proportion equation
   57,852.33 : 86,785.50 = 20,404.74 : x
2. Step 2: Convert to fraction form
   57,852.33/86,785.50 = 20,404.74/x
3. Step 3: Cross multiply
   57,852.33x = 86,785.50 × 20,404.74
4. Step 4: Simplify right side
   57,852.33x = 1,770,835,175.59
5. Step 5: Solve for x
   x = 1,770,835,175.59/57,852.33
6. Step 6: Final answer
   x = 30,609.58