Finding the Fourth Proportional to 65,078.84, 89,859.70 and 49,947.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,078.84 : 89,859.70 = 49,947.56 : x
2. Step 2: Convert to fraction form
   65,078.84/89,859.70 = 49,947.56/x
3. Step 3: Cross multiply
   65,078.84x = 89,859.70 × 49,947.56
4. Step 4: Simplify right side
   65,078.84x = 4,488,272,757.33
5. Step 5: Solve for x
   x = 4,488,272,757.33/65,078.84
6. Step 6: Final answer
   x = 68,966.70