Finding the Fourth Proportional to 95,144.16, 142,934.88 and 67,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   95,144.16 : 142,934.88 = 67,128.72 : x
2. Step 2: Convert to fraction form
   95,144.16/142,934.88 = 67,128.72/x
3. Step 3: Cross multiply
   95,144.16x = 142,934.88 × 67,128.72
4. Step 4: Simplify right side
   95,144.16x = 9,595,035,537.75
5. Step 5: Solve for x
   x = 9,595,035,537.75/95,144.16
6. Step 6: Final answer
   x = 100,847.34