Finding the Fourth Proportional to 162,621, 224,384.76 and 90,987.12

Step by Step Solution

1. Step 1: Write the proportion equation
   162,621 : 224,384.76 = 90,987.12 : x
2. Step 2: Convert to fraction form
   162,621/224,384.76 = 90,987.12/x
3. Step 3: Cross multiply
   162,621x = 224,384.76 × 90,987.12
4. Step 4: Simplify right side
   162,621x = 20,416,123,084.29
5. Step 5: Solve for x
   x = 20,416,123,084.29/162,621
6. Step 6: Final answer
   x = 125,544.20