Finding the Fourth Proportional to 406,499,019.52, 560,973,748.84 and 220,863,135.28

Step by Step Solution

1. Step 1: Write the proportion equation
   406,499,019.52 : 560,973,748.84 = 220,863,135.28 : x
2. Step 2: Convert to fraction form
   406,499,019.52/560,973,748.84 = 220,863,135.28/x
3. Step 3: Cross multiply
   406,499,019.52x = 560,973,748.84 × 220,863,135.28
4. Step 4: Simplify right side
   406,499,019.52x = 123,898,420,978,577,664
5. Step 5: Solve for x
   x = 123,898,420,978,577,664/406,499,019.52
6. Step 6: Final answer
   x = 304,793,898.70