Finding the Fourth Proportional to 72,229.55, 108,273.89 and 30,121.67

Step by Step Solution

1. Step 1: Write the proportion equation
   72,229.55 : 108,273.89 = 30,121.67 : x
2. Step 2: Convert to fraction form
   72,229.55/108,273.89 = 30,121.67/x
3. Step 3: Cross multiply
   72,229.55x = 108,273.89 × 30,121.67
4. Step 4: Simplify right side
   72,229.55x = 3,261,390,645.47
5. Step 5: Solve for x
   x = 3,261,390,645.47/72,229.55
6. Step 6: Final answer
   x = 45,153.14