Finding the Fourth Proportional to 318,069.89, 477,054.71 and 264,379.34

Step by Step Solution

1. Step 1: Write the proportion equation
   318,069.89 : 477,054.71 = 264,379.34 : x
2. Step 2: Convert to fraction form
   318,069.89/477,054.71 = 264,379.34/x
3. Step 3: Cross multiply
   318,069.89x = 477,054.71 × 264,379.34
4. Step 4: Simplify right side
   318,069.89x = 126,123,409,373.69
5. Step 5: Solve for x
   x = 126,123,409,373.69/318,069.89
6. Step 6: Final answer
   x = 396,527.35