Finding the Fourth Proportional to 65,014.80, 91,143.60 and 65,014.80

Step by Step Solution

1. Step 1: Write the proportion equation
   65,014.80 : 91,143.60 = 65,014.80 : x
2. Step 2: Convert to fraction form
   65,014.80/91,143.60 = 65,014.80/x
3. Step 3: Cross multiply
   65,014.80x = 91,143.60 × 65,014.80
4. Step 4: Simplify right side
   65,014.80x = 5,925,682,925.28
5. Step 5: Solve for x
   x = 5,925,682,925.28/65,014.80
6. Step 6: Final answer
   x = 91,143.60