Finding the Fourth Proportional to 142,634.52, 196,838.71 and 78,106.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,634.52 : 196,838.71 = 78,106.48 : x
2. Step 2: Convert to fraction form
   142,634.52/196,838.71 = 78,106.48/x
3. Step 3: Cross multiply
   142,634.52x = 196,838.71 × 78,106.48
4. Step 4: Simplify right side
   142,634.52x = 15,374,378,078.48
5. Step 5: Solve for x
   x = 15,374,378,078.48/142,634.52
6. Step 6: Final answer
   x = 107,788.62