Finding the Fourth Proportional to 222,906, 334,413.02 and 128,196.80

Step by Step Solution

1. Step 1: Write the proportion equation
   222,906 : 334,413.02 = 128,196.80 : x
2. Step 2: Convert to fraction form
   222,906/334,413.02 = 128,196.80/x
3. Step 3: Cross multiply
   222,906x = 334,413.02 × 128,196.80
4. Step 4: Simplify right side
   222,906x = 42,870,679,042.34
5. Step 5: Solve for x
   x = 42,870,679,042.34/222,906
6. Step 6: Final answer
   x = 192,326.27