Finding the Fourth Proportional to 57,144.83, 85,800.47 and 42,198.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,144.83 : 85,800.47 = 42,198.06 : x
2. Step 2: Convert to fraction form
   57,144.83/85,800.47 = 42,198.06/x
3. Step 3: Cross multiply
   57,144.83x = 85,800.47 × 42,198.06
4. Step 4: Simplify right side
   57,144.83x = 3,620,613,491.85
5. Step 5: Solve for x
   x = 3,620,613,491.85/57,144.83
6. Step 6: Final answer
   x = 63,358.55