Finding the Fourth Proportional to 326,501.62, 489,941.50 and 136,945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   326,501.62 : 489,941.50 = 136,945.12 : x
2. Step 2: Convert to fraction form
   326,501.62/489,941.50 = 136,945.12/x
3. Step 3: Cross multiply
   326,501.62x = 489,941.50 × 136,945.12
4. Step 4: Simplify right side
   326,501.62x = 67,095,097,510.48
5. Step 5: Solve for x
   x = 67,095,097,510.48/326,501.62
6. Step 6: Final answer
   x = 205,496.98