Finding the Fourth Proportional to 480,499.39, 662,930.67 and 308,513.71

Step by Step Solution

1. Step 1: Write the proportion equation
   480,499.39 : 662,930.67 = 308,513.71 : x
2. Step 2: Convert to fraction form
   480,499.39/662,930.67 = 308,513.71/x
3. Step 3: Cross multiply
   480,499.39x = 662,930.67 × 308,513.71
4. Step 4: Simplify right side
   480,499.39x = 204,523,197,159.83
5. Step 5: Solve for x
   x = 204,523,197,159.83/480,499.39
6. Step 6: Final answer
   x = 425,647.16