Finding the Fourth Proportional to 404,908,298.89, 558,773,991.35 and 219,269,634.73

Step by Step Solution

1. Step 1: Write the proportion equation
   404,908,298.89 : 558,773,991.35 = 219,269,634.73 : x
2. Step 2: Convert to fraction form
   404,908,298.89/558,773,991.35 = 219,269,634.73/x
3. Step 3: Cross multiply
   404,908,298.89x = 558,773,991.35 × 219,269,634.73
4. Step 4: Simplify right side
   404,908,298.89x = 122,522,168,978,842,336
5. Step 5: Solve for x
   x = 122,522,168,978,842,336/404,908,298.89
6. Step 6: Final answer
   x = 302,592,387.74