Finding the Fourth Proportional to 42,507.72, 58,661.82 and 25,731

Step by Step Solution

1. Step 1: Write the proportion equation
   42,507.72 : 58,661.82 = 25,731 : x
2. Step 2: Convert to fraction form
   42,507.72/58,661.82 = 25,731/x
3. Step 3: Cross multiply
   42,507.72x = 58,661.82 × 25,731
4. Step 4: Simplify right side
   42,507.72x = 1,509,427,290.42
5. Step 5: Solve for x
   x = 1,509,427,290.42/42,507.72
6. Step 6: Final answer
   x = 35,509.49