Finding the Fourth Proportional to 72,631.92, 108,969.76 and 25,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,631.92 : 108,969.76 = 25,878.72 : x
2. Step 2: Convert to fraction form
   72,631.92/108,969.76 = 25,878.72/x
3. Step 3: Cross multiply
   72,631.92x = 108,969.76 × 25,878.72
4. Step 4: Simplify right side
   72,631.92x = 2,819,997,907.51
5. Step 5: Solve for x
   x = 2,819,997,907.51/72,631.92
6. Step 6: Final answer
   x = 38,825.88