Finding the Fourth Proportional to 78,920.40, 108,912.49 and 43,111.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,920.40 : 108,912.49 = 43,111.00 : x
2. Step 2: Convert to fraction form
   78,920.40/108,912.49 = 43,111.00/x
3. Step 3: Cross multiply
   78,920.40x = 108,912.49 × 43,111.00
4. Step 4: Simplify right side
   78,920.40x = 4,695,325,976.33
5. Step 5: Solve for x
   x = 4,695,325,976.33/78,920.40
6. Step 6: Final answer
   x = 59,494.45