Finding the Fourth Proportional to 274,574.50, 412,152.89 and 243,188.31

Step by Step Solution

1. Step 1: Write the proportion equation
   274,574.50 : 412,152.89 = 243,188.31 : x
2. Step 2: Convert to fraction form
   274,574.50/412,152.89 = 243,188.31/x
3. Step 3: Cross multiply
   274,574.50x = 412,152.89 × 243,188.31
4. Step 4: Simplify right side
   274,574.50x = 100,230,764,780.72
5. Step 5: Solve for x
   x = 100,230,764,780.72/274,574.50
6. Step 6: Final answer
   x = 365,040.33