Finding the Fourth Proportional to 166,049.76, 249,147.72 and 87,144.96

Step by Step Solution

1. Step 1: Write the proportion equation
   166,049.76 : 249,147.72 = 87,144.96 : x
2. Step 2: Convert to fraction form
   166,049.76/249,147.72 = 87,144.96/x
3. Step 3: Cross multiply
   166,049.76x = 249,147.72 × 87,144.96
4. Step 4: Simplify right side
   166,049.76x = 21,711,968,093.49
5. Step 5: Solve for x
   x = 21,711,968,093.49/166,049.76
6. Step 6: Final answer
   x = 130,755.79