Finding the Fourth Proportional to 142,162.63, 196,182.07 and 78,498.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,162.63 : 196,182.07 = 78,498.79 : x
2. Step 2: Convert to fraction form
   142,162.63/196,182.07 = 78,498.79/x
3. Step 3: Cross multiply
   142,162.63x = 196,182.07 × 78,498.79
4. Step 4: Simplify right side
   142,162.63x = 15,400,055,114.70
5. Step 5: Solve for x
   x = 15,400,055,114.70/142,162.63
6. Step 6: Final answer
   x = 108,327.03