Finding the Fourth Proportional to 406,061,673.98, 560,365,820.43 and 220,422,815.42

Step by Step Solution

1. Step 1: Write the proportion equation
   406,061,673.98 : 560,365,820.43 = 220,422,815.42 : x
2. Step 2: Convert to fraction form
   406,061,673.98/560,365,820.43 = 220,422,815.42/x
3. Step 3: Cross multiply
   406,061,673.98x = 560,365,820.43 × 220,422,815.42
4. Step 4: Simplify right side
   406,061,673.98x = 123,517,411,804,318,736
5. Step 5: Solve for x
   x = 123,517,411,804,318,736/406,061,673.98
6. Step 6: Final answer
   x = 304,183,870.87