Finding the Fourth Proportional to 166,429, 229,672.02 and 90,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   166,429 : 229,672.02 = 90,978.04 : x
2. Step 2: Convert to fraction form
   166,429/229,672.02 = 90,978.04/x
3. Step 3: Cross multiply
   166,429x = 229,672.02 × 90,978.04
4. Step 4: Simplify right side
   166,429x = 20,895,110,222.44
5. Step 5: Solve for x
   x = 20,895,110,222.44/166,429
6. Step 6: Final answer
   x = 125,549.70