Finding the Fourth Proportional to 498,498.00, 687,923.72 and 272,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,498.00 : 687,923.72 = 272,143.50 : x
2. Step 2: Convert to fraction form
   498,498.00/687,923.72 = 272,143.50/x
3. Step 3: Cross multiply
   498,498.00x = 687,923.72 × 272,143.50
4. Step 4: Simplify right side
   498,498.00x = 187,213,965,973.93
5. Step 5: Solve for x
   x = 187,213,965,973.93/498,498.00
6. Step 6: Final answer
   x = 375,556.11