Finding the Fourth Proportional to 142,232.56, 196,281.30 and 78,568.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,232.56 : 196,281.30 = 78,568.72 : x
2. Step 2: Convert to fraction form
   142,232.56/196,281.30 = 78,568.72/x
3. Step 3: Cross multiply
   142,232.56x = 196,281.30 × 78,568.72
4. Step 4: Simplify right side
   142,232.56x = 15,421,570,500.94
5. Step 5: Solve for x
   x = 15,421,570,500.94/142,232.56
6. Step 6: Final answer
   x = 108,425.04