Finding the Fourth Proportional to 57,078.72, 78,749.46 and 33,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,078.72 : 78,749.46 = 33,185.88 : x
2. Step 2: Convert to fraction form
   57,078.72/78,749.46 = 33,185.88/x
3. Step 3: Cross multiply
   57,078.72x = 78,749.46 × 33,185.88
4. Step 4: Simplify right side
   57,078.72x = 2,613,370,129.62
5. Step 5: Solve for x
   x = 2,613,370,129.62/57,078.72
6. Step 6: Final answer
   x = 45,785.37