Finding the Fourth Proportional to 168,016.40, 252,046.20 and 83,819.60

Step by Step Solution

1. Step 1: Write the proportion equation
   168,016.40 : 252,046.20 = 83,819.60 : x
2. Step 2: Convert to fraction form
   168,016.40/252,046.20 = 83,819.60/x
3. Step 3: Cross multiply
   168,016.40x = 252,046.20 × 83,819.60
4. Step 4: Simplify right side
   168,016.40x = 21,126,411,665.52
5. Step 5: Solve for x
   x = 21,126,411,665.52/168,016.40
6. Step 6: Final answer
   x = 125,740.18