Finding the Fourth Proportional to 65,890.43, 98,732.15 and 50,934.21

Step by Step Solution

1. Step 1: Write the proportion equation
   65,890.43 : 98,732.15 = 50,934.21 : x
2. Step 2: Convert to fraction form
   65,890.43/98,732.15 = 50,934.21/x
3. Step 3: Cross multiply
   65,890.43x = 98,732.15 × 50,934.21
4. Step 4: Simplify right side
   65,890.43x = 5,028,844,061.85
5. Step 5: Solve for x
   x = 5,028,844,061.85/65,890.43
6. Step 6: Final answer
   x = 76,321.31