Finding the Fourth Proportional to 78,939.27, 108,934.91 and 43,128.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,939.27 : 108,934.91 = 43,128.51 : x
2. Step 2: Convert to fraction form
   78,939.27/108,934.91 = 43,128.51/x
3. Step 3: Cross multiply
   78,939.27x = 108,934.91 × 43,128.51
4. Step 4: Simplify right side
   78,939.27x = 4,698,200,355.28
5. Step 5: Solve for x
   x = 4,698,200,355.28/78,939.27
6. Step 6: Final answer
   x = 59,516.64