Finding the Fourth Proportional to 78,595.92, 108,462.38 and 42,786.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,595.92 : 108,462.38 = 42,786.20 : x
2. Step 2: Convert to fraction form
   78,595.92/108,462.38 = 42,786.20/x
3. Step 3: Cross multiply
   78,595.92x = 108,462.38 × 42,786.20
4. Step 4: Simplify right side
   78,595.92x = 4,640,692,326.91
5. Step 5: Solve for x
   x = 4,640,692,326.91/78,595.92
6. Step 6: Final answer
   x = 59,044.95