Finding the Fourth Proportional to 320,128.79, 441,771.31 and 176,885.15

Step by Step Solution

1. Step 1: Write the proportion equation
   320,128.79 : 441,771.31 = 176,885.15 : x
2. Step 2: Convert to fraction form
   320,128.79/441,771.31 = 176,885.15/x
3. Step 3: Cross multiply
   320,128.79x = 441,771.31 × 176,885.15
4. Step 4: Simplify right side
   320,128.79x = 78,142,784,435.05
5. Step 5: Solve for x
   x = 78,142,784,435.05/320,128.79
6. Step 6: Final answer
   x = 244,097.96