Finding the Fourth Proportional to 162,435.72, 224,181.88 and 90,819.96

Step by Step Solution

1. Step 1: Write the proportion equation
   162,435.72 : 224,181.88 = 90,819.96 : x
2. Step 2: Convert to fraction form
   162,435.72/224,181.88 = 90,819.96/x
3. Step 3: Cross multiply
   162,435.72x = 224,181.88 × 90,819.96
4. Step 4: Simplify right side
   162,435.72x = 20,360,189,374.32
5. Step 5: Solve for x
   x = 20,360,189,374.32/162,435.72
6. Step 6: Final answer
   x = 125,343.05