Finding the Fourth Proportional to 406,499,018.52, 560,973,747.46 and 220,863,134.28

Step by Step Solution

1. Step 1: Write the proportion equation
   406,499,018.52 : 560,973,747.46 = 220,863,134.28 : x
2. Step 2: Convert to fraction form
   406,499,018.52/560,973,747.46 = 220,863,134.28/x
3. Step 3: Cross multiply
   406,499,018.52x = 560,973,747.46 × 220,863,134.28
4. Step 4: Simplify right side
   406,499,018.52x = 123,898,420,112,812,800
5. Step 5: Solve for x
   x = 123,898,420,112,812,800/406,499,018.52
6. Step 6: Final answer
   x = 304,793,897.32