Finding the Fourth Proportional to 42,081.72, 58,085.10 and 26,158.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,081.72 : 58,085.10 = 26,158.20 : x
2. Step 2: Convert to fraction form
   42,081.72/58,085.10 = 26,158.20/x
3. Step 3: Cross multiply
   42,081.72x = 58,085.10 × 26,158.20
4. Step 4: Simplify right side
   42,081.72x = 1,519,401,662.82
5. Step 5: Solve for x
   x = 1,519,401,662.82/42,081.72
6. Step 6: Final answer
   x = 36,105.98