Finding the Fourth Proportional to 356,407.72, 492,491.46 and 339,132.84

Step by Step Solution

1. Step 1: Write the proportion equation
   356,407.72 : 492,491.46 = 339,132.84 : x
2. Step 2: Convert to fraction form
   356,407.72/492,491.46 = 339,132.84/x
3. Step 3: Cross multiply
   356,407.72x = 492,491.46 × 339,132.84
4. Step 4: Simplify right side
   356,407.72x = 167,020,027,505.55
5. Step 5: Solve for x
   x = 167,020,027,505.55/356,407.72
6. Step 6: Final answer
   x = 468,620.68