Finding the Fourth Proportional to 151,651.72, 209,280.09 and 83,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,651.72 : 209,280.09 = 83,669.50 : x
2. Step 2: Convert to fraction form
   151,651.72/209,280.09 = 83,669.50/x
3. Step 3: Cross multiply
   151,651.72x = 209,280.09 × 83,669.50
4. Step 4: Simplify right side
   151,651.72x = 17,510,360,490.26
5. Step 5: Solve for x
   x = 17,510,360,490.26/151,651.72
6. Step 6: Final answer
   x = 115,464.31