Finding the Fourth Proportional to 114,288.61, 157,704.81 and 65,890

Step by Step Solution

1. Step 1: Write the proportion equation
   114,288.61 : 157,704.81 = 65,890 : x
2. Step 2: Convert to fraction form
   114,288.61/157,704.81 = 65,890/x
3. Step 3: Cross multiply
   114,288.61x = 157,704.81 × 65,890
4. Step 4: Simplify right side
   114,288.61x = 10,391,169,930.90
5. Step 5: Solve for x
   x = 10,391,169,930.90/114,288.61
6. Step 6: Final answer
   x = 90,920.43