Finding the Fourth Proportional to 42,081.21, 58,093.11 and 26,170.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,081.21 : 58,093.11 = 26,170.78 : x
2. Step 2: Convert to fraction form
   42,081.21/58,093.11 = 26,170.78/x
3. Step 3: Cross multiply
   42,081.21x = 58,093.11 × 26,170.78
4. Step 4: Simplify right side
   42,081.21x = 1,520,342,001.33
5. Step 5: Solve for x
   x = 1,520,342,001.33/42,081.21
6. Step 6: Final answer
   x = 36,128.76