Finding the Fourth Proportional to 81,896.31, 122,864.86 and 65,092.73

Step by Step Solution

1. Step 1: Write the proportion equation
   81,896.31 : 122,864.86 = 65,092.73 : x
2. Step 2: Convert to fraction form
   81,896.31/122,864.86 = 65,092.73/x
3. Step 3: Cross multiply
   81,896.31x = 122,864.86 × 65,092.73
4. Step 4: Simplify right side
   81,896.31x = 7,997,608,625.51
5. Step 5: Solve for x
   x = 7,997,608,625.51/81,896.31
6. Step 6: Final answer
   x = 97,655.30