Finding the Fourth Proportional to 78,738.98, 108,660.42 and 42,929.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,738.98 : 108,660.42 = 42,929.24 : x
2. Step 2: Convert to fraction form
   78,738.98/108,660.42 = 42,929.24/x
3. Step 3: Cross multiply
   78,738.98x = 108,660.42 × 42,929.24
4. Step 4: Simplify right side
   78,738.98x = 4,664,708,705.38
5. Step 5: Solve for x
   x = 4,664,708,705.38/78,738.98
6. Step 6: Final answer
   x = 59,242.69