Finding the Fourth Proportional to 142,025.08, 195,998.72 and 78,366.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,025.08 : 195,998.72 = 78,366.98 : x
2. Step 2: Convert to fraction form
   142,025.08/195,998.72 = 78,366.98/x
3. Step 3: Cross multiply
   142,025.08x = 195,998.72 × 78,366.98
4. Step 4: Simplify right side
   142,025.08x = 15,359,826,765.93
5. Step 5: Solve for x
   x = 15,359,826,765.93/142,025.08
6. Step 6: Final answer
   x = 108,148.69