Finding the Fourth Proportional to 42,081.71, 58,093.80 and 26,171.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,081.71 : 58,093.80 = 26,171.28 : x
2. Step 2: Convert to fraction form
   42,081.71/58,093.80 = 26,171.28/x
3. Step 3: Cross multiply
   42,081.71x = 58,093.80 × 26,171.28
4. Step 4: Simplify right side
   42,081.71x = 1,520,389,106.06
5. Step 5: Solve for x
   x = 1,520,389,106.06/42,081.71
6. Step 6: Final answer
   x = 36,129.46