Finding the Fourth Proportional to 162,518.76, 224,287.61 and 90,921.83

Step by Step Solution

1. Step 1: Write the proportion equation
   162,518.76 : 224,287.61 = 90,921.83 : x
2. Step 2: Convert to fraction form
   162,518.76/224,287.61 = 90,921.83/x
3. Step 3: Cross multiply
   162,518.76x = 224,287.61 × 90,921.83
4. Step 4: Simplify right side
   162,518.76x = 20,392,638,371.48
5. Step 5: Solve for x
   x = 20,392,638,371.48/162,518.76
6. Step 6: Final answer
   x = 125,478.67