Finding the Fourth Proportional to 72,669.92, 108,903.38 and 35,220.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,669.92 : 108,903.38 = 35,220.05 : x
2. Step 2: Convert to fraction form
   72,669.92/108,903.38 = 35,220.05/x
3. Step 3: Cross multiply
   72,669.92x = 108,903.38 × 35,220.05
4. Step 4: Simplify right side
   72,669.92x = 3,835,581,768.15
5. Step 5: Solve for x
   x = 3,835,581,768.15/72,669.92
6. Step 6: Final answer
   x = 52,780.88