Finding the Fourth Proportional to 78,739.89, 108,660.97 and 42,929.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,739.89 : 108,660.97 = 42,929.89 : x
2. Step 2: Convert to fraction form
   78,739.89/108,660.97 = 42,929.89/x
3. Step 3: Cross multiply
   78,739.89x = 108,660.97 × 42,929.89
4. Step 4: Simplify right side
   78,739.89x = 4,664,803,489.39
5. Step 5: Solve for x
   x = 4,664,803,489.39/78,739.89
6. Step 6: Final answer
   x = 59,243.21