Finding the Fourth Proportional to 42,140.38, 58,164.90 and 26,215.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,140.38 : 58,164.90 = 26,215.78 : x
2. Step 2: Convert to fraction form
   42,140.38/58,164.90 = 26,215.78/x
3. Step 3: Cross multiply
   42,140.38x = 58,164.90 × 26,215.78
4. Step 4: Simplify right side
   42,140.38x = 1,524,838,222.12
5. Step 5: Solve for x
   x = 1,524,838,222.12/42,140.38
6. Step 6: Final answer
   x = 36,184.73