Finding the Fourth Proportional to 42,993.38, 64,576.01 and 25,930.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,993.38 : 64,576.01 = 25,930.38 : x
2. Step 2: Convert to fraction form
   42,993.38/64,576.01 = 25,930.38/x
3. Step 3: Cross multiply
   42,993.38x = 64,576.01 × 25,930.38
4. Step 4: Simplify right side
   42,993.38x = 1,674,480,300.85
5. Step 5: Solve for x
   x = 1,674,480,300.85/42,993.38
6. Step 6: Final answer
   x = 38,947.40