Finding the Fourth Proportional to 151,605.91, 209,212.49 and 83,621.42

Step by Step Solution

1. Step 1: Write the proportion equation
   151,605.91 : 209,212.49 = 83,621.42 : x
2. Step 2: Convert to fraction form
   151,605.91/209,212.49 = 83,621.42/x
3. Step 3: Cross multiply
   151,605.91x = 209,212.49 × 83,621.42
4. Step 4: Simplify right side
   151,605.91x = 17,494,646,619.89
5. Step 5: Solve for x
   x = 17,494,646,619.89/151,605.91
6. Step 6: Final answer
   x = 115,395.54