Finding the Fourth Proportional to 87,018.06, 120,057.96 and 48,772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   87,018.06 : 120,057.96 = 48,772.31 : x
2. Step 2: Convert to fraction form
   87,018.06/120,057.96 = 48,772.31/x
3. Step 3: Cross multiply
   87,018.06x = 120,057.96 × 48,772.31
4. Step 4: Simplify right side
   87,018.06x = 5,855,503,499.08
5. Step 5: Solve for x
   x = 5,855,503,499.08/87,018.06
6. Step 6: Final answer
   x = 67,290.67