Finding the Fourth Proportional to 42,015.29, 57,978.81 and 26,099.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,015.29 : 57,978.81 = 26,099.45 : x
2. Step 2: Convert to fraction form
   42,015.29/57,978.81 = 26,099.45/x
3. Step 3: Cross multiply
   42,015.29x = 57,978.81 × 26,099.45
4. Step 4: Simplify right side
   42,015.29x = 1,513,215,052.65
5. Step 5: Solve for x
   x = 1,513,215,052.65/42,015.29
6. Step 6: Final answer
   x = 36,015.82