Finding the Fourth Proportional to 493,443.50, 740,016.25 and 256,657.01

Step by Step Solution

1. Step 1: Write the proportion equation
   493,443.50 : 740,016.25 = 256,657.01 : x
2. Step 2: Convert to fraction form
   493,443.50/740,016.25 = 256,657.01/x
3. Step 3: Cross multiply
   493,443.50x = 740,016.25 × 256,657.01
4. Step 4: Simplify right side
   493,443.50x = 189,930,355,178.38
5. Step 5: Solve for x
   x = 189,930,355,178.38/493,443.50
6. Step 6: Final answer
   x = 384,908.01