Finding the Fourth Proportional to 142,075.94, 196,064.39 and 78,413.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142,075.94 : 196,064.39 = 78,413.29 : x
2. Step 2: Convert to fraction form
   142,075.94/196,064.39 = 78,413.29/x
3. Step 3: Cross multiply
   142,075.94x = 196,064.39 × 78,413.29
4. Step 4: Simplify right side
   142,075.94x = 15,374,053,871.74
5. Step 5: Solve for x
   x = 15,374,053,871.74/142,075.94
6. Step 6: Final answer
   x = 108,210.12