Finding the Fourth Proportional to 56,757.57, 85,059.81 and 28,697.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,757.57 : 85,059.81 = 28,697.42 : x
2. Step 2: Convert to fraction form
   56,757.57/85,059.81 = 28,697.42/x
3. Step 3: Cross multiply
   56,757.57x = 85,059.81 × 28,697.42
4. Step 4: Simplify right side
   56,757.57x = 2,440,996,667.39
5. Step 5: Solve for x
   x = 2,440,996,667.39/56,757.57
6. Step 6: Final answer
   x = 43,007.42