Finding the Fourth Proportional to 65,010.55, 91,211.60 and 65,010.55

Step by Step Solution

1. Step 1: Write the proportion equation
   65,010.55 : 91,211.60 = 65,010.55 : x
2. Step 2: Convert to fraction form
   65,010.55/91,211.60 = 65,010.55/x
3. Step 3: Cross multiply
   65,010.55x = 91,211.60 × 65,010.55
4. Step 4: Simplify right side
   65,010.55x = 5,929,716,282.38
5. Step 5: Solve for x
   x = 5,929,716,282.38/65,010.55
6. Step 6: Final answer
   x = 91,211.60