Finding the Fourth Proportional to 663,066.10, 995,117.55 and 308,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   663,066.10 : 995,117.55 = 308,124.10 : x
2. Step 2: Convert to fraction form
   663,066.10/995,117.55 = 308,124.10/x
3. Step 3: Cross multiply
   663,066.10x = 995,117.55 × 308,124.10
4. Step 4: Simplify right side
   663,066.10x = 306,619,699,487.96
5. Step 5: Solve for x
   x = 306,619,699,487.96/663,066.10
6. Step 6: Final answer
   x = 462,427.05