Finding the Fourth Proportional to 328,577.31, 492,365.69 and 243,940.41

Step by Step Solution

1. Step 1: Write the proportion equation
   328,577.31 : 492,365.69 = 243,940.41 : x
2. Step 2: Convert to fraction form
   328,577.31/492,365.69 = 243,940.41/x
3. Step 3: Cross multiply
   328,577.31x = 492,365.69 × 243,940.41
4. Step 4: Simplify right side
   328,577.31x = 120,107,887,983.61
5. Step 5: Solve for x
   x = 120,107,887,983.61/328,577.31
6. Step 6: Final answer
   x = 365,539.20