Finding the Fourth Proportional to 65,144.07, 89,867.66 and 37,920.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,144.07 : 89,867.66 = 37,920.15 : x
2. Step 2: Convert to fraction form
   65,144.07/89,867.66 = 37,920.15/x
3. Step 3: Cross multiply
   65,144.07x = 89,867.66 × 37,920.15
4. Step 4: Simplify right side
   65,144.07x = 3,407,794,957.75
5. Step 5: Solve for x
   x = 3,407,794,957.75/65,144.07
6. Step 6: Final answer
   x = 52,311.67