Finding the Fourth Proportional to 142,565.86, 196,744.17 and 78,906.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,565.86 : 196,744.17 = 78,906.34 : x
2. Step 2: Convert to fraction form
   142,565.86/196,744.17 = 78,906.34/x
3. Step 3: Cross multiply
   142,565.86x = 196,744.17 × 78,906.34
4. Step 4: Simplify right side
   142,565.86x = 15,524,362,371.04
5. Step 5: Solve for x
   x = 15,524,362,371.04/142,565.86
6. Step 6: Final answer
   x = 108,892.57