Finding the Fourth Proportional to 166,800.67, 230,185.40 and 90,320.67

Step by Step Solution

1. Step 1: Write the proportion equation
   166,800.67 : 230,185.40 = 90,320.67 : x
2. Step 2: Convert to fraction form
   166,800.67/230,185.40 = 90,320.67/x
3. Step 3: Cross multiply
   166,800.67x = 230,185.40 × 90,320.67
4. Step 4: Simplify right side
   166,800.67x = 20,790,499,100.61
5. Step 5: Solve for x
   x = 20,790,499,100.61/166,800.67
6. Step 6: Final answer
   x = 124,642.78