Finding the Fourth Proportional to 496,406,892.50, 685,115,986.72 and 377,133,211.42

Step by Step Solution

1. Step 1: Write the proportion equation
   496,406,892.50 : 685,115,986.72 = 377,133,211.42 : x
2. Step 2: Convert to fraction form
   496,406,892.50/685,115,986.72 = 377,133,211.42/x
3. Step 3: Cross multiply
   496,406,892.50x = 685,115,986.72 × 377,133,211.42
4. Step 4: Simplify right side
   496,406,892.50x = 258,379,992,266,895,680
5. Step 5: Solve for x
   x = 258,379,992,266,895,680/496,406,892.50
6. Step 6: Final answer
   x = 520,500,412.40