Finding the Fourth Proportional to 69,906.78, 104,756.50 and 51,348.06

Step by Step Solution

1. Step 1: Write the proportion equation
   69,906.78 : 104,756.50 = 51,348.06 : x
2. Step 2: Convert to fraction form
   69,906.78/104,756.50 = 51,348.06/x
3. Step 3: Cross multiply
   69,906.78x = 104,756.50 × 51,348.06
4. Step 4: Simplify right side
   69,906.78x = 5,379,043,047.39
5. Step 5: Solve for x
   x = 5,379,043,047.39/69,906.78
6. Step 6: Final answer
   x = 76,945.94