Finding the Fourth Proportional to 72,410.61, 108,560.31 and 27,431.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,410.61 : 108,560.31 = 27,431.31 : x
2. Step 2: Convert to fraction form
   72,410.61/108,560.31 = 27,431.31/x
3. Step 3: Cross multiply
   72,410.61x = 108,560.31 × 27,431.31
4. Step 4: Simplify right side
   72,410.61x = 2,977,951,517.31
5. Step 5: Solve for x
   x = 2,977,951,517.31/72,410.61
6. Step 6: Final answer
   x = 41,125.90