Finding the Fourth Proportional to 72,301.76, 108,435.15 and 27,900.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,301.76 : 108,435.15 = 27,900.20 : x
2. Step 2: Convert to fraction form
   72,301.76/108,435.15 = 27,900.20/x
3. Step 3: Cross multiply
   72,301.76x = 108,435.15 × 27,900.20
4. Step 4: Simplify right side
   72,301.76x = 3,025,361,829.85
5. Step 5: Solve for x
   x = 3,025,361,829.85/72,301.76
6. Step 6: Final answer
   x = 41,843.55