Finding the Fourth Proportional to 72,811.72, 109,243.86 and 25,433.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,811.72 : 109,243.86 = 25,433.83 : x
2. Step 2: Convert to fraction form
   72,811.72/109,243.86 = 25,433.83/x
3. Step 3: Cross multiply
   72,811.72x = 109,243.86 × 25,433.83
4. Step 4: Simplify right side
   72,811.72x = 2,778,489,763.78
5. Step 5: Solve for x
   x = 2,778,489,763.78/72,811.72
6. Step 6: Final answer
   x = 38,159.92