Finding the Fourth Proportional to 78,223.86, 107,948.30 and 42,413.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,223.86 : 107,948.30 = 42,413.76 : x
2. Step 2: Convert to fraction form
   78,223.86/107,948.30 = 42,413.76/x
3. Step 3: Cross multiply
   78,223.86x = 107,948.30 × 42,413.76
4. Step 4: Simplify right side
   78,223.86x = 4,578,493,076.54
5. Step 5: Solve for x
   x = 4,578,493,076.54/78,223.86
6. Step 6: Final answer
   x = 58,530.65