Finding the Fourth Proportional to 151,028.72, 208,424.20 and 83,042.20

Step by Step Solution

1. Step 1: Write the proportion equation
   151,028.72 : 208,424.20 = 83,042.20 : x
2. Step 2: Convert to fraction form
   151,028.72/208,424.20 = 83,042.20/x
3. Step 3: Cross multiply
   151,028.72x = 208,424.20 × 83,042.20
4. Step 4: Simplify right side
   151,028.72x = 17,308,004,101.24
5. Step 5: Solve for x
   x = 17,308,004,101.24/151,028.72
6. Step 6: Final answer
   x = 114,600.75