Finding the Fourth Proportional to 646,303.89, 891,934.71 and 359,817.69

Step by Step Solution

1. Step 1: Write the proportion equation
   646,303.89 : 891,934.71 = 359,817.69 : x
2. Step 2: Convert to fraction form
   646,303.89/891,934.71 = 359,817.69/x
3. Step 3: Cross multiply
   646,303.89x = 891,934.71 × 359,817.69
4. Step 4: Simplify right side
   646,303.89x = 320,933,886,983.02
5. Step 5: Solve for x
   x = 320,933,886,983.02/646,303.89
6. Step 6: Final answer
   x = 496,568.09