Finding the Fourth Proportional to 150,196.17, 207,271.26 and 83,128.17

Step by Step Solution

1. Step 1: Write the proportion equation
   150,196.17 : 207,271.26 = 83,128.17 : x
2. Step 2: Convert to fraction form
   150,196.17/207,271.26 = 83,128.17/x
3. Step 3: Cross multiply
   150,196.17x = 207,271.26 × 83,128.17
4. Step 4: Simplify right side
   150,196.17x = 17,230,080,537.39
5. Step 5: Solve for x
   x = 17,230,080,537.39/150,196.17
6. Step 6: Final answer
   x = 114,717.18