Finding the Fourth Proportional to 78,675.15, 108,572.95 and 42,865.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,675.15 : 108,572.95 = 42,865.15 : x
2. Step 2: Convert to fraction form
   78,675.15/108,572.95 = 42,865.15/x
3. Step 3: Cross multiply
   78,675.15x = 108,572.95 × 42,865.15
4. Step 4: Simplify right side
   78,675.15x = 4,653,995,244.83
5. Step 5: Solve for x
   x = 4,653,995,244.83/78,675.15
6. Step 6: Final answer
   x = 59,154.58