Finding the Fourth Proportional to 406,380,427.92, 560,815,416.72 and 220,752,066.96

Step by Step Solution

1. Step 1: Write the proportion equation
   406,380,427.92 : 560,815,416.72 = 220,752,066.96 : x
2. Step 2: Convert to fraction form
   406,380,427.92/560,815,416.72 = 220,752,066.96/x
3. Step 3: Cross multiply
   406,380,427.92x = 560,815,416.72 × 220,752,066.96
4. Step 4: Simplify right side
   406,380,427.92x = 123,801,162,423,973,760
5. Step 5: Solve for x
   x = 123,801,162,423,973,760/406,380,427.92
6. Step 6: Final answer
   x = 304,643,516.07