Finding the Fourth Proportional to 85,871.99, 128,697.12 and 38,452.37

Step by Step Solution

1. Step 1: Write the proportion equation
   85,871.99 : 128,697.12 = 38,452.37 : x
2. Step 2: Convert to fraction form
   85,871.99/128,697.12 = 38,452.37/x
3. Step 3: Cross multiply
   85,871.99x = 128,697.12 × 38,452.37
4. Step 4: Simplify right side
   85,871.99x = 4,948,708,632.69
5. Step 5: Solve for x
   x = 4,948,708,632.69/85,871.99
6. Step 6: Final answer
   x = 57,628.90