Finding the Fourth Proportional to 449,870.74, 620,821.76 and 245,922.56

Step by Step Solution

1. Step 1: Write the proportion equation
   449,870.74 : 620,821.76 = 245,922.56 : x
2. Step 2: Convert to fraction form
   449,870.74/620,821.76 = 245,922.56/x
3. Step 3: Cross multiply
   449,870.74x = 620,821.76 × 245,922.56
4. Step 4: Simplify right side
   449,870.74x = 152,674,072,189.18
5. Step 5: Solve for x
   x = 152,674,072,189.18/449,870.74
6. Step 6: Final answer
   x = 339,373.20