Finding the Fourth Proportional to 142,635.94, 196,843.74 and 78,973.73

Step by Step Solution

1. Step 1: Write the proportion equation
   142,635.94 : 196,843.74 = 78,973.73 : x
2. Step 2: Convert to fraction form
   142,635.94/196,843.74 = 78,973.73/x
3. Step 3: Cross multiply
   142,635.94x = 196,843.74 × 78,973.73
4. Step 4: Simplify right side
   142,635.94x = 15,545,485,606.33
5. Step 5: Solve for x
   x = 15,545,485,606.33/142,635.94
6. Step 6: Final answer
   x = 108,987.16