Finding the Fourth Proportional to 109,341.57, 163,413.27 and 79,821.57

Step by Step Solution

1. Step 1: Write the proportion equation
   109,341.57 : 163,413.27 = 79,821.57 : x
2. Step 2: Convert to fraction form
   109,341.57/163,413.27 = 79,821.57/x
3. Step 3: Cross multiply
   109,341.57x = 163,413.27 × 79,821.57
4. Step 4: Simplify right side
   109,341.57x = 13,043,903,770.23
5. Step 5: Solve for x
   x = 13,043,903,770.23/109,341.57
6. Step 6: Final answer
   x = 119,295.01