Finding the Fourth Proportional to 498,499.50, 687,925.79 and 272,145

Step by Step Solution

1. Step 1: Write the proportion equation
   498,499.50 : 687,925.79 = 272,145 : x
2. Step 2: Convert to fraction form
   498,499.50/687,925.79 = 272,145/x
3. Step 3: Cross multiply
   498,499.50x = 687,925.79 × 272,145
4. Step 4: Simplify right side
   498,499.50x = 187,215,562,758.83
5. Step 5: Solve for x
   x = 187,215,562,758.83/498,499.50
6. Step 6: Final answer
   x = 375,558.18