Finding the Fourth Proportional to 150,738.28, 208,008.42 and 83,665

Step by Step Solution

1. Step 1: Write the proportion equation
   150,738.28 : 208,008.42 = 83,665 : x
2. Step 2: Convert to fraction form
   150,738.28/208,008.42 = 83,665/x
3. Step 3: Cross multiply
   150,738.28x = 208,008.42 × 83,665
4. Step 4: Simplify right side
   150,738.28x = 17,403,024,459.30
5. Step 5: Solve for x
   x = 17,403,024,459.30/150,738.28
6. Step 6: Final answer
   x = 115,451.92