Finding the Fourth Proportional to 142,444.82, 196,568.34 and 78,783.68

Step by Step Solution

1. Step 1: Write the proportion equation
   142,444.82 : 196,568.34 = 78,783.68 : x
2. Step 2: Convert to fraction form
   142,444.82/196,568.34 = 78,783.68/x
3. Step 3: Cross multiply
   142,444.82x = 196,568.34 × 78,783.68
4. Step 4: Simplify right side
   142,444.82x = 15,486,377,196.69
5. Step 5: Solve for x
   x = 15,486,377,196.69/142,444.82
6. Step 6: Final answer
   x = 108,718.43