Finding the Fourth Proportional to 78,323.45, 117,458.82 and 28,393.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,323.45 : 117,458.82 = 28,393.10 : x
2. Step 2: Convert to fraction form
   78,323.45/117,458.82 = 28,393.10/x
3. Step 3: Cross multiply
   78,323.45x = 117,458.82 × 28,393.10
4. Step 4: Simplify right side
   78,323.45x = 3,335,020,022.14
5. Step 5: Solve for x
   x = 3,335,020,022.14/78,323.45
6. Step 6: Final answer
   x = 42,580.10