Finding the Fourth Proportional to 404,499.32, 558,320.10 and 234,788.12

Step by Step Solution

1. Step 1: Write the proportion equation
   404,499.32 : 558,320.10 = 234,788.12 : x
2. Step 2: Convert to fraction form
   404,499.32/558,320.10 = 234,788.12/x
3. Step 3: Cross multiply
   404,499.32x = 558,320.10 × 234,788.12
4. Step 4: Simplify right side
   404,499.32x = 131,086,926,637.21
5. Step 5: Solve for x
   x = 131,086,926,637.21/404,499.32
6. Step 6: Final answer
   x = 324,072.06