Finding the Fourth Proportional to 150,128.37, 207,179.78 and 82,151.35

Step by Step Solution

1. Step 1: Write the proportion equation
   150,128.37 : 207,179.78 = 82,151.35 : x
2. Step 2: Convert to fraction form
   150,128.37/207,179.78 = 82,151.35/x
3. Step 3: Cross multiply
   150,128.37x = 207,179.78 × 82,151.35
4. Step 4: Simplify right side
   150,128.37x = 17,020,097,691.00
5. Step 5: Solve for x
   x = 17,020,097,691.00/150,128.37
6. Step 6: Final answer
   x = 113,370.30