Finding the Fourth Proportional to 89,138.10, 123,005.78 and 48,851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89,138.10 : 123,005.78 = 48,851.94 : x
2. Step 2: Convert to fraction form
   89,138.10/123,005.78 = 48,851.94/x
3. Step 3: Cross multiply
   89,138.10x = 123,005.78 × 48,851.94
4. Step 4: Simplify right side
   89,138.10x = 6,009,070,984.21
5. Step 5: Solve for x
   x = 6,009,070,984.21/89,138.10
6. Step 6: Final answer
   x = 67,413.05