Finding the Fourth Proportional to 142,076.16, 196,064.14 and 78,413.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,076.16 : 196,064.14 = 78,413.96 : x
2. Step 2: Convert to fraction form
   142,076.16/196,064.14 = 78,413.96/x
3. Step 3: Cross multiply
   142,076.16x = 196,064.14 × 78,413.96
4. Step 4: Simplify right side
   142,076.16x = 15,374,164,259.00
5. Step 5: Solve for x
   x = 15,374,164,259.00/142,076.16
6. Step 6: Final answer
   x = 108,210.72