Finding the Fourth Proportional to 142,575.34, 196,753.22 and 78,912.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,575.34 : 196,753.22 = 78,912.96 : x
2. Step 2: Convert to fraction form
   142,575.34/196,753.22 = 78,912.96/x
3. Step 3: Cross multiply
   142,575.34x = 196,753.22 × 78,912.96
4. Step 4: Simplify right side
   142,575.34x = 15,526,378,979.73
5. Step 5: Solve for x
   x = 15,526,378,979.73/142,575.34
6. Step 6: Final answer
   x = 108,899.47