Finding the Fourth Proportional to 78,964.81, 108,978.93 and 43,160.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,964.81 : 108,978.93 = 43,160.20 : x
2. Step 2: Convert to fraction form
   78,964.81/108,978.93 = 43,160.20/x
3. Step 3: Cross multiply
   78,964.81x = 108,978.93 × 43,160.20
4. Step 4: Simplify right side
   78,964.81x = 4,703,552,142.14
5. Step 5: Solve for x
   x = 4,703,552,142.14/78,964.81
6. Step 6: Final answer
   x = 59,565.17