Finding the Fourth Proportional to 445,846.89, 667,628.55 and 245,945.10

Step by Step Solution

1. Step 1: Write the proportion equation
   445,846.89 : 667,628.55 = 245,945.10 : x
2. Step 2: Convert to fraction form
   445,846.89/667,628.55 = 245,945.10/x
3. Step 3: Cross multiply
   445,846.89x = 667,628.55 × 245,945.10
4. Step 4: Simplify right side
   445,846.89x = 164,199,970,492.61
5. Step 5: Solve for x
   x = 164,199,970,492.61/445,846.89
6. Step 6: Final answer
   x = 368,287.80