Finding the Fourth Proportional to 308,995.83, 461,177.06 and 288,817.83

Step by Step Solution

1. Step 1: Write the proportion equation
   308,995.83 : 461,177.06 = 288,817.83 : x
2. Step 2: Convert to fraction form
   308,995.83/461,177.06 = 288,817.83/x
3. Step 3: Cross multiply
   308,995.83x = 461,177.06 × 288,817.83
4. Step 4: Simplify right side
   308,995.83x = 133,196,156,270.89
5. Step 5: Solve for x
   x = 133,196,156,270.89/308,995.83
6. Step 6: Final answer
   x = 431,061.34