Finding the Fourth Proportional to 489,123.10, 732,208.41 and 489,123.10

Step by Step Solution

1. Step 1: Write the proportion equation
   489,123.10 : 732,208.41 = 489,123.10 : x
2. Step 2: Convert to fraction form
   489,123.10/732,208.41 = 489,123.10/x
3. Step 3: Cross multiply
   489,123.10x = 732,208.41 × 489,123.10
4. Step 4: Simplify right side
   489,123.10x = 358,140,047,345.27
5. Step 5: Solve for x
   x = 358,140,047,345.27/489,123.10
6. Step 6: Final answer
   x = 732,208.41