Finding the Fourth Proportional to 78,708.69, 108,620.28 and 42,901.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,708.69 : 108,620.28 = 42,901.02 : x
2. Step 2: Convert to fraction form
   78,708.69/108,620.28 = 42,901.02/x
3. Step 3: Cross multiply
   78,708.69x = 108,620.28 × 42,901.02
4. Step 4: Simplify right side
   78,708.69x = 4,659,920,804.69
5. Step 5: Solve for x
   x = 4,659,920,804.69/78,708.69
6. Step 6: Final answer
   x = 59,204.65