Finding the Fourth Proportional to 162,440.72, 224,169.56 and 89,842.40

Step by Step Solution

1. Step 1: Write the proportion equation
   162,440.72 : 224,169.56 = 89,842.40 : x
2. Step 2: Convert to fraction form
   162,440.72/224,169.56 = 89,842.40/x
3. Step 3: Cross multiply
   162,440.72x = 224,169.56 × 89,842.40
4. Step 4: Simplify right side
   162,440.72x = 20,139,931,277.34
5. Step 5: Solve for x
   x = 20,139,931,277.34/162,440.72
6. Step 6: Final answer
   x = 123,983.27