Finding the Fourth Proportional to 78,978.56, 108,986.61 and 43,168.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,978.56 : 108,986.61 = 43,168.58 : x
2. Step 2: Convert to fraction form
   78,978.56/108,986.61 = 43,168.58/x
3. Step 3: Cross multiply
   78,978.56x = 108,986.61 × 43,168.58
4. Step 4: Simplify right side
   78,978.56x = 4,704,796,647.78
5. Step 5: Solve for x
   x = 4,704,796,647.78/78,978.56
6. Step 6: Final answer
   x = 59,570.56