Finding the Fourth Proportional to 78,914.69, 118,423.82 and 28,995.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,914.69 : 118,423.82 = 28,995.20 : x
2. Step 2: Convert to fraction form
   78,914.69/118,423.82 = 28,995.20/x
3. Step 3: Cross multiply
   78,914.69x = 118,423.82 × 28,995.20
4. Step 4: Simplify right side
   78,914.69x = 3,433,721,608.57
5. Step 5: Solve for x
   x = 3,433,721,608.57/78,914.69
6. Step 6: Final answer
   x = 43,511.82