Finding the Fourth Proportional to 214,162.89, 321,281.24 and 72,021.56

Step by Step Solution

1. Step 1: Write the proportion equation
   214,162.89 : 321,281.24 = 72,021.56 : x
2. Step 2: Convert to fraction form
   214,162.89/321,281.24 = 72,021.56/x
3. Step 3: Cross multiply
   214,162.89x = 321,281.24 × 72,021.56
4. Step 4: Simplify right side
   214,162.89x = 23,139,174,137.02
5. Step 5: Solve for x
   x = 23,139,174,137.02/214,162.89
6. Step 6: Final answer
   x = 108,044.74