Finding the Fourth Proportional to 78,969.98, 108,978.18 and 43,159.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,969.98 : 108,978.18 = 43,159.16 : x
2. Step 2: Convert to fraction form
   78,969.98/108,978.18 = 43,159.16/x
3. Step 3: Cross multiply
   78,969.98x = 108,978.18 × 43,159.16
4. Step 4: Simplify right side
   78,969.98x = 4,703,406,707.13
5. Step 5: Solve for x
   x = 4,703,406,707.13/78,969.98
6. Step 6: Final answer
   x = 59,559.43