Finding the Fourth Proportional to 78,708.76, 108,620.39 and 42,901.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,708.76 : 108,620.39 = 42,901.09 : x
2. Step 2: Convert to fraction form
   78,708.76/108,620.39 = 42,901.09/x
3. Step 3: Cross multiply
   78,708.76x = 108,620.39 × 42,901.09
4. Step 4: Simplify right side
   78,708.76x = 4,659,932,962.93
5. Step 5: Solve for x
   x = 4,659,932,962.93/78,708.76
6. Step 6: Final answer
   x = 59,204.76