Finding the Fourth Proportional to 168,185.58, 252,352.89 and 89,280.78

Step by Step Solution

1. Step 1: Write the proportion equation
   168,185.58 : 252,352.89 = 89,280.78 : x
2. Step 2: Convert to fraction form
   168,185.58/252,352.89 = 89,280.78/x
3. Step 3: Cross multiply
   168,185.58x = 252,352.89 × 89,280.78
4. Step 4: Simplify right side
   168,185.58x = 22,530,262,854.45
5. Step 5: Solve for x
   x = 22,530,262,854.45/168,185.58
6. Step 6: Final answer
   x = 133,960.73