Finding the Fourth Proportional to 162,406.72, 224,120.56 and 90,786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,406.72 : 224,120.56 = 90,786.72 : x
2. Step 2: Convert to fraction form
   162,406.72/224,120.56 = 90,786.72/x
3. Step 3: Cross multiply
   162,406.72x = 224,120.56 × 90,786.72
4. Step 4: Simplify right side
   162,406.72x = 20,347,170,526.96
5. Step 5: Solve for x
   x = 20,347,170,526.96/162,406.72
6. Step 6: Final answer
   x = 125,285.27