Finding the Fourth Proportional to 150,919.50, 208,269.72 and 83,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,919.50 : 208,269.72 = 83,851.50 : x
2. Step 2: Convert to fraction form
   150,919.50/208,269.72 = 83,851.50/x
3. Step 3: Cross multiply
   150,919.50x = 208,269.72 × 83,851.50
4. Step 4: Simplify right side
   150,919.50x = 17,463,728,426.58
5. Step 5: Solve for x
   x = 17,463,728,426.58/150,919.50
6. Step 6: Final answer
   x = 115,715.52