Finding the Fourth Proportional to 150,128, 207,179.28 and 82,150.92

Step by Step Solution

1. Step 1: Write the proportion equation
   150,128 : 207,179.28 = 82,150.92 : x
2. Step 2: Convert to fraction form
   150,128/207,179.28 = 82,150.92/x
3. Step 3: Cross multiply
   150,128x = 207,179.28 × 82,150.92
4. Step 4: Simplify right side
   150,128x = 17,019,968,456.94
5. Step 5: Solve for x
   x = 17,019,968,456.94/150,128
6. Step 6: Final answer
   x = 113,369.71