Finding the Fourth Proportional to 151,920.83, 209,654.97 and 83,942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   151,920.83 : 209,654.97 = 83,942.18 : x
2. Step 2: Convert to fraction form
   151,920.83/209,654.97 = 83,942.18/x
3. Step 3: Cross multiply
   151,920.83x = 209,654.97 × 83,942.18
4. Step 4: Simplify right side
   151,920.83x = 17,598,895,635.92
5. Step 5: Solve for x
   x = 17,598,895,635.92/151,920.83
6. Step 6: Final answer
   x = 115,842.55