Finding the Fourth Proportional to 267,443.56, 398,808.23 and 265,045.15

Step by Step Solution

1. Step 1: Write the proportion equation
   267,443.56 : 398,808.23 = 265,045.15 : x
2. Step 2: Convert to fraction form
   267,443.56/398,808.23 = 265,045.15/x
3. Step 3: Cross multiply
   267,443.56x = 398,808.23 × 265,045.15
4. Step 4: Simplify right side
   267,443.56x = 105,702,187,141.59
5. Step 5: Solve for x
   x = 105,702,187,141.59/267,443.56
6. Step 6: Final answer
   x = 395,231.75