Finding the Fourth Proportional to 155,766.15, 214,957.15 and 84,146.15

Step by Step Solution

1. Step 1: Write the proportion equation
   155,766.15 : 214,957.15 = 84,146.15 : x
2. Step 2: Convert to fraction form
   155,766.15/214,957.15 = 84,146.15/x
3. Step 3: Cross multiply
   155,766.15x = 214,957.15 × 84,146.15
4. Step 4: Simplify right side
   155,766.15x = 18,087,816,914.50
5. Step 5: Solve for x
   x = 18,087,816,914.50/155,766.15
6. Step 6: Final answer
   x = 116,121.62