Finding the Fourth Proportional to 142,238.06, 196,281.27 and 78,563.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,238.06 : 196,281.27 = 78,563.54 : x
2. Step 2: Convert to fraction form
   142,238.06/196,281.27 = 78,563.54/x
3. Step 3: Cross multiply
   142,238.06x = 196,281.27 × 78,563.54
4. Step 4: Simplify right side
   142,238.06x = 15,420,551,406.90
5. Step 5: Solve for x
   x = 15,420,551,406.90/142,238.06
6. Step 6: Final answer
   x = 108,413.68