Finding the Fourth Proportional to 687,424.48, 1,030,890.72 and 238,024.69

Step by Step Solution

1. Step 1: Write the proportion equation
   687,424.48 : 1,030,890.72 = 238,024.69 : x
2. Step 2: Convert to fraction form
   687,424.48/1,030,890.72 = 238,024.69/x
3. Step 3: Cross multiply
   687,424.48x = 1,030,890.72 × 238,024.69
4. Step 4: Simplify right side
   687,424.48x = 245,377,444,051.88
5. Step 5: Solve for x
   x = 245,377,444,051.88/687,424.48
6. Step 6: Final answer
   x = 356,951.86