Finding the Fourth Proportional to 61,317.60, 86,019.60 and 61,317.60

Step by Step Solution

1. Step 1: Write the proportion equation
   61,317.60 : 86,019.60 = 61,317.60 : x
2. Step 2: Convert to fraction form
   61,317.60/86,019.60 = 61,317.60/x
3. Step 3: Cross multiply
   61,317.60x = 86,019.60 × 61,317.60
4. Step 4: Simplify right side
   61,317.60x = 5,274,515,424.96
5. Step 5: Solve for x
   x = 5,274,515,424.96/61,317.60
6. Step 6: Final answer
   x = 86,019.60