Finding the Fourth Proportional to 78,760.89, 108,686.61 and 42,951.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,760.89 : 108,686.61 = 42,951.06 : x
2. Step 2: Convert to fraction form
   78,760.89/108,686.61 = 42,951.06/x
3. Step 3: Cross multiply
   78,760.89x = 108,686.61 × 42,951.06
4. Step 4: Simplify right side
   78,760.89x = 4,668,205,107.31
5. Step 5: Solve for x
   x = 4,668,205,107.31/78,760.89
6. Step 6: Final answer
   x = 59,270.60