Finding the Fourth Proportional to 162,552.72, 224,317.55 and 90,931.21

Step by Step Solution

1. Step 1: Write the proportion equation
   162,552.72 : 224,317.55 = 90,931.21 : x
2. Step 2: Convert to fraction form
   162,552.72/224,317.55 = 90,931.21/x
3. Step 3: Cross multiply
   162,552.72x = 224,317.55 × 90,931.21
4. Step 4: Simplify right side
   162,552.72x = 20,397,465,912.27
5. Step 5: Solve for x
   x = 20,397,465,912.27/162,552.72
6. Step 6: Final answer
   x = 125,482.15