Finding the Fourth Proportional to 78,681.56, 108,579.18 and 42,871.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,681.56 : 108,579.18 = 42,871.82 : x
2. Step 2: Convert to fraction form
   78,681.56/108,579.18 = 42,871.82/x
3. Step 3: Cross multiply
   78,681.56x = 108,579.18 × 42,871.82
4. Step 4: Simplify right side
   78,681.56x = 4,654,987,060.71
5. Step 5: Solve for x
   x = 4,654,987,060.71/78,681.56
6. Step 6: Final answer
   x = 59,162.36