Finding the Fourth Proportional to 464,624.30, 641,406.83 and 311,606.52

Step by Step Solution

1. Step 1: Write the proportion equation
   464,624.30 : 641,406.83 = 311,606.52 : x
2. Step 2: Convert to fraction form
   464,624.30/641,406.83 = 311,606.52/x
3. Step 3: Cross multiply
   464,624.30x = 641,406.83 × 311,606.52
4. Step 4: Simplify right side
   464,624.30x = 199,866,550,200.53
5. Step 5: Solve for x
   x = 199,866,550,200.53/464,624.30
6. Step 6: Final answer
   x = 430,168.10