Finding the Fourth Proportional to 570,978.53, 856,401.07 and 229,408.12

Step by Step Solution

1. Step 1: Write the proportion equation
   570,978.53 : 856,401.07 = 229,408.12 : x
2. Step 2: Convert to fraction form
   570,978.53/856,401.07 = 229,408.12/x
3. Step 3: Cross multiply
   570,978.53x = 856,401.07 × 229,408.12
4. Step 4: Simplify right side
   570,978.53x = 196,465,359,434.69
5. Step 5: Solve for x
   x = 196,465,359,434.69/570,978.53
6. Step 6: Final answer
   x = 344,085.37