Finding the Fourth Proportional to 151,647.50, 209,272.10 and 83,665.02

Step by Step Solution

1. Step 1: Write the proportion equation
   151,647.50 : 209,272.10 = 83,665.02 : x
2. Step 2: Convert to fraction form
   151,647.50/209,272.10 = 83,665.02/x
3. Step 3: Cross multiply
   151,647.50x = 209,272.10 × 83,665.02
4. Step 4: Simplify right side
   151,647.50x = 17,508,754,431.94
5. Step 5: Solve for x
   x = 17,508,754,431.94/151,647.50
6. Step 6: Final answer
   x = 115,456.93