Finding the Fourth Proportional to 495,899.30, 745,404.15 and 486,568.10

Step by Step Solution

1. Step 1: Write the proportion equation
   495,899.30 : 745,404.15 = 486,568.10 : x
2. Step 2: Convert to fraction form
   495,899.30/745,404.15 = 486,568.10/x
3. Step 3: Cross multiply
   495,899.30x = 745,404.15 × 486,568.10
4. Step 4: Simplify right side
   495,899.30x = 362,689,880,997.62
5. Step 5: Solve for x
   x = 362,689,880,997.62/495,899.30
6. Step 6: Final answer
   x = 731,378.09