Finding the Fourth Proportional to 309,958.98, 464,938.50 and 99,744.54

Step by Step Solution

1. Step 1: Write the proportion equation
   309,958.98 : 464,938.50 = 99,744.54 : x
2. Step 2: Convert to fraction form
   309,958.98/464,938.50 = 99,744.54/x
3. Step 3: Cross multiply
   309,958.98x = 464,938.50 × 99,744.54
4. Step 4: Simplify right side
   309,958.98x = 46,375,076,810.79
5. Step 5: Solve for x
   x = 46,375,076,810.79/309,958.98
6. Step 6: Final answer
   x = 149,616.82