Finding the Fourth Proportional to 61,951.10, 86,906.50 and 61,951.10

Step by Step Solution

1. Step 1: Write the proportion equation
   61,951.10 : 86,906.50 = 61,951.10 : x
2. Step 2: Convert to fraction form
   61,951.10/86,906.50 = 61,951.10/x
3. Step 3: Cross multiply
   61,951.10x = 86,906.50 × 61,951.10
4. Step 4: Simplify right side
   61,951.10x = 5,383,953,272.15
5. Step 5: Solve for x
   x = 5,383,953,272.15/61,951.10
6. Step 6: Final answer
   x = 86,906.50