Finding the Fourth Proportional to 65,936.69, 91,044.78 and 60,898.90

Step by Step Solution

1. Step 1: Write the proportion equation
   65,936.69 : 91,044.78 = 60,898.90 : x
2. Step 2: Convert to fraction form
   65,936.69/91,044.78 = 60,898.90/x
3. Step 3: Cross multiply
   65,936.69x = 91,044.78 × 60,898.90
4. Step 4: Simplify right side
   65,936.69x = 5,544,526,952.74
5. Step 5: Solve for x
   x = 5,544,526,952.74/65,936.69
6. Step 6: Final answer
   x = 84,088.65