Finding the Fourth Proportional to 151,128.75, 208,557.68 and 83,144.27

Step by Step Solution

1. Step 1: Write the proportion equation
   151,128.75 : 208,557.68 = 83,144.27 : x
2. Step 2: Convert to fraction form
   151,128.75/208,557.68 = 83,144.27/x
3. Step 3: Cross multiply
   151,128.75x = 208,557.68 × 83,144.27
4. Step 4: Simplify right side
   151,128.75x = 17,340,375,013.71
5. Step 5: Solve for x
   x = 17,340,375,013.71/151,128.75
6. Step 6: Final answer
   x = 114,739.09