Finding the Fourth Proportional to 78,426.24, 108,228.89 and 42,616.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426.24 : 108,228.89 = 42,616.25 : x
2. Step 2: Convert to fraction form
   78,426.24/108,228.89 = 42,616.25/x
3. Step 3: Cross multiply
   78,426.24x = 108,228.89 × 42,616.25
4. Step 4: Simplify right side
   78,426.24x = 4,612,309,433.46
5. Step 5: Solve for x
   x = 4,612,309,433.46/78,426.24
6. Step 6: Final answer
   x = 58,810.79