Finding the Fourth Proportional to 72,216.43, 108,334.40 and 25,458.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,216.43 : 108,334.40 = 25,458.37 : x
2. Step 2: Convert to fraction form
   72,216.43/108,334.40 = 25,458.37/x
3. Step 3: Cross multiply
   72,216.43x = 108,334.40 × 25,458.37
4. Step 4: Simplify right side
   72,216.43x = 2,758,016,840.80
5. Step 5: Solve for x
   x = 2,758,016,840.80/72,216.43
6. Step 6: Final answer
   x = 38,190.99