Finding the Fourth Proportional to 85,708.01, 128,644.94 and 41,365.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,708.01 : 128,644.94 = 41,365.98 : x
2. Step 2: Convert to fraction form
   85,708.01/128,644.94 = 41,365.98/x
3. Step 3: Cross multiply
   85,708.01x = 128,644.94 × 41,365.98
4. Step 4: Simplify right side
   85,708.01x = 5,321,524,015.14
5. Step 5: Solve for x
   x = 5,321,524,015.14/85,708.01
6. Step 6: Final answer
   x = 62,088.99