Finding the Fourth Proportional to 326,436.16, 450,552.48 and 249,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   326,436.16 : 450,552.48 = 249,112.72 : x
2. Step 2: Convert to fraction form
   326,436.16/450,552.48 = 249,112.72/x
3. Step 3: Cross multiply
   326,436.16x = 450,552.48 × 249,112.72
4. Step 4: Simplify right side
   326,436.16x = 112,238,353,795.55
5. Step 5: Solve for x
   x = 112,238,353,795.55/326,436.16
6. Step 6: Final answer
   x = 343,829.41