Finding the Fourth Proportional to 78,391.26, 108,181.89 and 42,581.26

Step by Step Solution

1. Step 1: Write the proportion equation
   78,391.26 : 108,181.89 = 42,581.26 : x
2. Step 2: Convert to fraction form
   78,391.26/108,181.89 = 42,581.26/x
3. Step 3: Cross multiply
   78,391.26x = 108,181.89 × 42,581.26
4. Step 4: Simplify right side
   78,391.26x = 4,606,521,185.38
5. Step 5: Solve for x
   x = 4,606,521,185.38/78,391.26
6. Step 6: Final answer
   x = 58,763.20