Finding the Fourth Proportional to 142,234.49, 196,266.88 and 78,568.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,234.49 : 196,266.88 = 78,568.49 : x
2. Step 2: Convert to fraction form
   142,234.49/196,266.88 = 78,568.49/x
3. Step 3: Cross multiply
   142,234.49x = 196,266.88 × 78,568.49
4. Step 4: Simplify right side
   142,234.49x = 15,420,392,987.49
5. Step 5: Solve for x
   x = 15,420,392,987.49/142,234.49
6. Step 6: Final answer
   x = 108,415.28