Finding the Fourth Proportional to 95,028.72, 141,936.06 and 86,009.04

Step by Step Solution

1. Step 1: Write the proportion equation
   95,028.72 : 141,936.06 = 86,009.04 : x
2. Step 2: Convert to fraction form
   95,028.72/141,936.06 = 86,009.04/x
3. Step 3: Cross multiply
   95,028.72x = 141,936.06 × 86,009.04
4. Step 4: Simplify right side
   95,028.72x = 12,207,784,261.98
5. Step 5: Solve for x
   x = 12,207,784,261.98/95,028.72
6. Step 6: Final answer
   x = 128,464.16