Finding the Fourth Proportional to 142,159.94, 196,182 and 78,502.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,159.94 : 196,182 = 78,502.58 : x
2. Step 2: Convert to fraction form
   142,159.94/196,182 = 78,502.58/x
3. Step 3: Cross multiply
   142,159.94x = 196,182 × 78,502.58
4. Step 4: Simplify right side
   142,159.94x = 15,400,793,149.56
5. Step 5: Solve for x
   x = 15,400,793,149.56/142,159.94
6. Step 6: Final answer
   x = 108,334.27