Finding the Fourth Proportional to 166,429, 229,672.84 and 90,977.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,429 : 229,672.84 = 90,977.50 : x
2. Step 2: Convert to fraction form
   166,429/229,672.84 = 90,977.50/x
3. Step 3: Cross multiply
   166,429x = 229,672.84 × 90,977.50
4. Step 4: Simplify right side
   166,429x = 20,895,060,801.10
5. Step 5: Solve for x
   x = 20,895,060,801.10/166,429
6. Step 6: Final answer
   x = 125,549.40