Finding the Fourth Proportional to 78,599.29, 108,466.99 and 42,789.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,599.29 : 108,466.99 = 42,789.29 : x
2. Step 2: Convert to fraction form
   78,599.29/108,466.99 = 42,789.29/x
3. Step 3: Cross multiply
   78,599.29x = 108,466.99 × 42,789.29
4. Step 4: Simplify right side
   78,599.29x = 4,641,225,490.54
5. Step 5: Solve for x
   x = 4,641,225,490.54/78,599.29
6. Step 6: Final answer
   x = 59,049.20