Finding the Fourth Proportional to 142,002.24, 195,972.56 and 81,592.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,002.24 : 195,972.56 = 81,592.40 : x
2. Step 2: Convert to fraction form
   142,002.24/195,972.56 = 81,592.40/x
3. Step 3: Cross multiply
   142,002.24x = 195,972.56 × 81,592.40
4. Step 4: Simplify right side
   142,002.24x = 15,989,871,504.54
5. Step 5: Solve for x
   x = 15,989,871,504.54/142,002.24
6. Step 6: Final answer
   x = 112,602.95