Finding the Fourth Proportional to 447,086.83, 616,928.12 and 256,088.83

Step by Step Solution

1. Step 1: Write the proportion equation
   447,086.83 : 616,928.12 = 256,088.83 : x
2. Step 2: Convert to fraction form
   447,086.83/616,928.12 = 256,088.83/x
3. Step 3: Cross multiply
   447,086.83x = 616,928.12 × 256,088.83
4. Step 4: Simplify right side
   447,086.83x = 157,988,399,164.46
5. Step 5: Solve for x
   x = 157,988,399,164.46/447,086.83
6. Step 6: Final answer
   x = 353,372.97