Finding the Fourth Proportional to 151,646.50, 209,270.72 and 83,664.02

Step by Step Solution

1. Step 1: Write the proportion equation
   151,646.50 : 209,270.72 = 83,664.02 : x
2. Step 2: Convert to fraction form
   151,646.50/209,270.72 = 83,664.02/x
3. Step 3: Cross multiply
   151,646.50x = 209,270.72 × 83,664.02
4. Step 4: Simplify right side
   151,646.50x = 17,508,430,391.59
5. Step 5: Solve for x
   x = 17,508,430,391.59/151,646.50
6. Step 6: Final answer
   x = 115,455.55