Finding the Fourth Proportional to 620,429.37, 856,059.71 and 362,189.11

Step by Step Solution

1. Step 1: Write the proportion equation
   620,429.37 : 856,059.71 = 362,189.11 : x
2. Step 2: Convert to fraction form
   620,429.37/856,059.71 = 362,189.11/x
3. Step 3: Cross multiply
   620,429.37x = 856,059.71 × 362,189.11
4. Step 4: Simplify right side
   620,429.37x = 310,055,500,191.46
5. Step 5: Solve for x
   x = 310,055,500,191.46/620,429.37
6. Step 6: Final answer
   x = 499,743.43