Finding the Fourth Proportional to 78,913.90, 108,903.54 and 43,105.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,913.90 : 108,903.54 = 43,105.60 : x
2. Step 2: Convert to fraction form
   78,913.90/108,903.54 = 43,105.60/x
3. Step 3: Cross multiply
   78,913.90x = 108,903.54 × 43,105.60
4. Step 4: Simplify right side
   78,913.90x = 4,694,352,433.82
5. Step 5: Solve for x
   x = 4,694,352,433.82/78,913.90
6. Step 6: Final answer
   x = 59,487.02