Finding the Fourth Proportional to 78,138.27, 107,830.71 and 42,328.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,138.27 : 107,830.71 = 42,328.44 : x
2. Step 2: Convert to fraction form
   78,138.27/107,830.71 = 42,328.44/x
3. Step 3: Cross multiply
   78,138.27x = 107,830.71 × 42,328.44
4. Step 4: Simplify right side
   78,138.27x = 4,564,305,738.39
5. Step 5: Solve for x
   x = 4,564,305,738.39/78,138.27
6. Step 6: Final answer
   x = 58,413.19