Finding the Fourth Proportional to 78,940.71, 108,936.89 and 43,129.95

Step by Step Solution

1. Step 1: Write the proportion equation
   78,940.71 : 108,936.89 = 43,129.95 : x
2. Step 2: Convert to fraction form
   78,940.71/108,936.89 = 43,129.95/x
3. Step 3: Cross multiply
   78,940.71x = 108,936.89 × 43,129.95
4. Step 4: Simplify right side
   78,940.71x = 4,698,442,618.86
5. Step 5: Solve for x
   x = 4,698,442,618.86/78,940.71
6. Step 6: Final answer
   x = 59,518.63