Finding the Fourth Proportional to 78,708.15, 108,616.56 and 42,898.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,708.15 : 108,616.56 = 42,898.14 : x
2. Step 2: Convert to fraction form
   78,708.15/108,616.56 = 42,898.14/x
3. Step 3: Cross multiply
   78,708.15x = 108,616.56 × 42,898.14
4. Step 4: Simplify right side
   78,708.15x = 4,659,448,397.20
5. Step 5: Solve for x
   x = 4,659,448,397.20/78,708.15
6. Step 6: Final answer
   x = 59,199.06