Finding the Fourth Proportional to 87,018.74, 130,540.63 and 33,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   87,018.74 : 130,540.63 = 33,003.31 : x
2. Step 2: Convert to fraction form
   87,018.74/130,540.63 = 33,003.31/x
3. Step 3: Cross multiply
   87,018.74x = 130,540.63 × 33,003.31
4. Step 4: Simplify right side
   87,018.74x = 4,308,272,879.49
5. Step 5: Solve for x
   x = 4,308,272,879.49/87,018.74
6. Step 6: Final answer
   x = 49,509.71