Finding the Fourth Proportional to 120,308.94, 180,344.37 and 57,017.82

Step by Step Solution

1. Step 1: Write the proportion equation
   120,308.94 : 180,344.37 = 57,017.82 : x
2. Step 2: Convert to fraction form
   120,308.94/180,344.37 = 57,017.82/x
3. Step 3: Cross multiply
   120,308.94x = 180,344.37 × 57,017.82
4. Step 4: Simplify right side
   120,308.94x = 10,282,842,826.67
5. Step 5: Solve for x
   x = 10,282,842,826.67/120,308.94
6. Step 6: Final answer
   x = 85,470.31