Finding the Fourth Proportional to 78,436.31, 108,241.99 and 42,626.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,436.31 : 108,241.99 = 42,626.23 : x
2. Step 2: Convert to fraction form
   78,436.31/108,241.99 = 42,626.23/x
3. Step 3: Cross multiply
   78,436.31x = 108,241.99 × 42,626.23
4. Step 4: Simplify right side
   78,436.31x = 4,613,947,584.23
5. Step 5: Solve for x
   x = 4,613,947,584.23/78,436.31
6. Step 6: Final answer
   x = 58,824.13