Finding the Fourth Proportional to 331,867.30, 497,412.15 and 248,664.10

Step by Step Solution

1. Step 1: Write the proportion equation
   331,867.30 : 497,412.15 = 248,664.10 : x
2. Step 2: Convert to fraction form
   331,867.30/497,412.15 = 248,664.10/x
3. Step 3: Cross multiply
   331,867.30x = 497,412.15 × 248,664.10
4. Step 4: Simplify right side
   331,867.30x = 123,688,544,608.82
5. Step 5: Solve for x
   x = 123,688,544,608.82/331,867.30
6. Step 6: Final answer
   x = 372,704.83