Finding the Fourth Proportional to 87,028.82, 120,090.72 and 51,216.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,028.82 : 120,090.72 = 51,216.69 : x
2. Step 2: Convert to fraction form
   87,028.82/120,090.72 = 51,216.69/x
3. Step 3: Cross multiply
   87,028.82x = 120,090.72 × 51,216.69
4. Step 4: Simplify right side
   87,028.82x = 6,150,649,178.12
5. Step 5: Solve for x
   x = 6,150,649,178.12/87,028.82
6. Step 6: Final answer
   x = 70,673.71