Finding the Fourth Proportional to 78,515.25, 108,353.26 and 42,707.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,515.25 : 108,353.26 = 42,707.54 : x
2. Step 2: Convert to fraction form
   78,515.25/108,353.26 = 42,707.54/x
3. Step 3: Cross multiply
   78,515.25x = 108,353.26 × 42,707.54
4. Step 4: Simplify right side
   78,515.25x = 4,627,501,185.58
5. Step 5: Solve for x
   x = 4,627,501,185.58/78,515.25
6. Step 6: Final answer
   x = 58,937.61