Finding the Fourth Proportional to 78,918.72, 108,908.76 and 43,109.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,918.72 : 108,908.76 = 43,109.04 : x
2. Step 2: Convert to fraction form
   78,918.72/108,908.76 = 43,109.04/x
3. Step 3: Cross multiply
   78,918.72x = 108,908.76 × 43,109.04
4. Step 4: Simplify right side
   78,918.72x = 4,694,952,091.19
5. Step 5: Solve for x
   x = 4,694,952,091.19/78,918.72
6. Step 6: Final answer
   x = 59,490.98