Finding the Fourth Proportional to 78,626.56, 108,504.66 and 42,816.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,626.56 : 108,504.66 = 42,816.56 : x
2. Step 2: Convert to fraction form
   78,626.56/108,504.66 = 42,816.56/x
3. Step 3: Cross multiply
   78,626.56x = 108,504.66 × 42,816.56
4. Step 4: Simplify right side
   78,626.56x = 4,645,796,285.17
5. Step 5: Solve for x
   x = 4,645,796,285.17/78,626.56
6. Step 6: Final answer
   x = 59,086.86