Finding the Fourth Proportional to 166,622.86, 229,938.59 and 90,141.74

Step by Step Solution

1. Step 1: Write the proportion equation
   166,622.86 : 229,938.59 = 90,141.74 : x
2. Step 2: Convert to fraction form
   166,622.86/229,938.59 = 90,141.74/x
3. Step 3: Cross multiply
   166,622.86x = 229,938.59 × 90,141.74
4. Step 4: Simplify right side
   166,622.86x = 20,727,065,395.95
5. Step 5: Solve for x
   x = 20,727,065,395.95/166,622.86
6. Step 6: Final answer
   x = 124,395.09