Finding the Fourth Proportional to 300,786,793.89, 415,221,784.52 and 189,441,273.03

Step by Step Solution

1. Step 1: Write the proportion equation
   300,786,793.89 : 415,221,784.52 = 189,441,273.03 : x
2. Step 2: Convert to fraction form
   300,786,793.89/415,221,784.52 = 189,441,273.03/x
3. Step 3: Cross multiply
   300,786,793.89x = 415,221,784.52 × 189,441,273.03
4. Step 4: Simplify right side
   300,786,793.89x = 78,660,143,448,309,936
5. Step 5: Solve for x
   x = 78,660,143,448,309,936/300,786,793.89
6. Step 6: Final answer
   x = 261,514,617.82