Finding the Fourth Proportional to 150,591.78, 207,816.78 and 83,523.78

Step by Step Solution

1. Step 1: Write the proportion equation
   150,591.78 : 207,816.78 = 83,523.78 : x
2. Step 2: Convert to fraction form
   150,591.78/207,816.78 = 83,523.78/x
3. Step 3: Cross multiply
   150,591.78x = 207,816.78 × 83,523.78
4. Step 4: Simplify right side
   150,591.78x = 17,357,643,013.03
5. Step 5: Solve for x
   x = 17,357,643,013.03/150,591.78
6. Step 6: Final answer
   x = 115,262.88