Finding the Fourth Proportional to 320,087.31, 441,581.72 and 192,689.10

Step by Step Solution

1. Step 1: Write the proportion equation
   320,087.31 : 441,581.72 = 192,689.10 : x
2. Step 2: Convert to fraction form
   320,087.31/441,581.72 = 192,689.10/x
3. Step 3: Cross multiply
   320,087.31x = 441,581.72 × 192,689.10
4. Step 4: Simplify right side
   320,087.31x = 85,087,981,995.34
5. Step 5: Solve for x
   x = 85,087,981,995.34/320,087.31
6. Step 6: Final answer
   x = 265,827.41