Finding the Fourth Proportional to 72,621.29, 108,931.86 and 25,236.39

Step by Step Solution

1. Step 1: Write the proportion equation
   72,621.29 : 108,931.86 = 25,236.39 : x
2. Step 2: Convert to fraction form
   72,621.29/108,931.86 = 25,236.39/x
3. Step 3: Cross multiply
   72,621.29x = 108,931.86 × 25,236.39
4. Step 4: Simplify right side
   72,621.29x = 2,749,046,621.10
5. Step 5: Solve for x
   x = 2,749,046,621.10/72,621.29
6. Step 6: Final answer
   x = 37,854.55