Finding the Fourth Proportional to 166,012.29, 229,096.47 and 90,560.25

Step by Step Solution

1. Step 1: Write the proportion equation
   166,012.29 : 229,096.47 = 90,560.25 : x
2. Step 2: Convert to fraction form
   166,012.29/229,096.47 = 90,560.25/x
3. Step 3: Cross multiply
   166,012.29x = 229,096.47 × 90,560.25
4. Step 4: Simplify right side
   166,012.29x = 20,747,033,597.32
5. Step 5: Solve for x
   x = 20,747,033,597.32/166,012.29
6. Step 6: Final answer
   x = 124,972.88