Finding the Fourth Proportional to 78,978.55, 108,990.13 and 43,168.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,978.55 : 108,990.13 = 43,168.54 : x
2. Step 2: Convert to fraction form
   78,978.55/108,990.13 = 43,168.54/x
3. Step 3: Cross multiply
   78,978.55x = 108,990.13 × 43,168.54
4. Step 4: Simplify right side
   78,978.55x = 4,704,944,786.51
5. Step 5: Solve for x
   x = 4,704,944,786.51/78,978.55
6. Step 6: Final answer
   x = 59,572.44