Finding the Fourth Proportional to 78,708, 108,615.69 and 42,898.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,708 : 108,615.69 = 42,898.44 : x
2. Step 2: Convert to fraction form
   78,708/108,615.69 = 42,898.44/x
3. Step 3: Cross multiply
   78,708x = 108,615.69 × 42,898.44
4. Step 4: Simplify right side
   78,708x = 4,659,443,660.52
5. Step 5: Solve for x
   x = 4,659,443,660.52/78,708
6. Step 6: Final answer
   x = 59,199.11