Finding the Fourth Proportional to 142,074.51, 196,061.49 and 78,410.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,074.51 : 196,061.49 = 78,410.94 : x
2. Step 2: Convert to fraction form
   142,074.51/196,061.49 = 78,410.94/x
3. Step 3: Cross multiply
   142,074.51x = 196,061.49 × 78,410.94
4. Step 4: Simplify right side
   142,074.51x = 15,373,365,728.70
5. Step 5: Solve for x
   x = 15,373,365,728.70/142,074.51
6. Step 6: Final answer
   x = 108,206.36