Finding the Fourth Proportional to 78,680.97, 108,576.68 and 42,871.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,680.97 : 108,576.68 = 42,871.25 : x
2. Step 2: Convert to fraction form
   78,680.97/108,576.68 = 42,871.25/x
3. Step 3: Cross multiply
   78,680.97x = 108,576.68 × 42,871.25
4. Step 4: Simplify right side
   78,680.97x = 4,654,817,449.57
5. Step 5: Solve for x
   x = 4,654,817,449.57/78,680.97
6. Step 6: Final answer
   x = 59,160.66