Finding the Fourth Proportional to 418,080.59, 576,961.89 and 236,789.83

Step by Step Solution

1. Step 1: Write the proportion equation
   418,080.59 : 576,961.89 = 236,789.83 : x
2. Step 2: Convert to fraction form
   418,080.59/576,961.89 = 236,789.83/x
3. Step 3: Cross multiply
   418,080.59x = 576,961.89 × 236,789.83
4. Step 4: Simplify right side
   418,080.59x = 136,618,707,682.82
5. Step 5: Solve for x
   x = 136,618,707,682.82/418,080.59
6. Step 6: Final answer
   x = 326,776.01