Finding the Fourth Proportional to 404,886.01, 558,740.81 and 223,597.15

Step by Step Solution

1. Step 1: Write the proportion equation
   404,886.01 : 558,740.81 = 223,597.15 : x
2. Step 2: Convert to fraction form
   404,886.01/558,740.81 = 223,597.15/x
3. Step 3: Cross multiply
   404,886.01x = 558,740.81 × 223,597.15
4. Step 4: Simplify right side
   404,886.01x = 124,932,852,704.69
5. Step 5: Solve for x
   x = 124,932,852,704.69/404,886.01
6. Step 6: Final answer
   x = 308,563.03