Finding the Fourth Proportional to 78,920.78, 108,913.01 and 43,111.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,920.78 : 108,913.01 = 43,111.37 : x
2. Step 2: Convert to fraction form
   78,920.78/108,913.01 = 43,111.37/x
3. Step 3: Cross multiply
   78,920.78x = 108,913.01 × 43,111.37
4. Step 4: Simplify right side
   78,920.78x = 4,695,389,128.65
5. Step 5: Solve for x
   x = 4,695,389,128.65/78,920.78
6. Step 6: Final answer
   x = 59,494.97