Finding the Fourth Proportional to 78,672.57, 108,568.16 and 42,862.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,672.57 : 108,568.16 = 42,862.58 : x
2. Step 2: Convert to fraction form
   78,672.57/108,568.16 = 42,862.58/x
3. Step 3: Cross multiply
   78,672.57x = 108,568.16 × 42,862.58
4. Step 4: Simplify right side
   78,672.57x = 4,653,511,064.88
5. Step 5: Solve for x
   x = 4,653,511,064.88/78,672.57
6. Step 6: Final answer
   x = 59,150.36