Finding the Fourth Proportional to 78,535.98, 117,814.09 and 28,608.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,535.98 : 117,814.09 = 28,608.38 : x
2. Step 2: Convert to fraction form
   78,535.98/117,814.09 = 28,608.38/x
3. Step 3: Cross multiply
   78,535.98x = 117,814.09 × 28,608.38
4. Step 4: Simplify right side
   78,535.98x = 3,370,470,256.07
5. Step 5: Solve for x
   x = 3,370,470,256.07/78,535.98
6. Step 6: Final answer
   x = 42,916.26