Finding the Fourth Proportional to 406,061,964.48, 560,366,221.86 and 220,423,105.92

Step by Step Solution

1. Step 1: Write the proportion equation
   406,061,964.48 : 560,366,221.86 = 220,423,105.92 : x
2. Step 2: Convert to fraction form
   406,061,964.48/560,366,221.86 = 220,423,105.92/x
3. Step 3: Cross multiply
   406,061,964.48x = 560,366,221.86 × 220,423,105.92
4. Step 4: Simplify right side
   406,061,964.48x = 123,517,663,075,036,992
5. Step 5: Solve for x
   x = 123,517,663,075,036,992/406,061,964.48
6. Step 6: Final answer
   x = 304,184,272.06