Finding the Fourth Proportional to 78,391.05, 108,179.76 and 42,581.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,391.05 : 108,179.76 = 42,581.06 : x
2. Step 2: Convert to fraction form
   78,391.05/108,179.76 = 42,581.06/x
3. Step 3: Cross multiply
   78,391.05x = 108,179.76 × 42,581.06
4. Step 4: Simplify right side
   78,391.05x = 4,606,408,759.68
5. Step 5: Solve for x
   x = 4,606,408,759.68/78,391.05
6. Step 6: Final answer
   x = 58,761.92