Finding the Fourth Proportional to 85,691.67, 128,536.16 and 23,362.17

Step by Step Solution

1. Step 1: Write the proportion equation
   85,691.67 : 128,536.16 = 23,362.17 : x
2. Step 2: Convert to fraction form
   85,691.67/128,536.16 = 23,362.17/x
3. Step 3: Cross multiply
   85,691.67x = 128,536.16 × 23,362.17
4. Step 4: Simplify right side
   85,691.67x = 3,002,883,504.26
5. Step 5: Solve for x
   x = 3,002,883,504.26/85,691.67
6. Step 6: Final answer
   x = 35,042.89