Finding the Fourth Proportional to 85,667.40, 128,427.16 and 41,233.04

Step by Step Solution

1. Step 1: Write the proportion equation
   85,667.40 : 128,427.16 = 41,233.04 : x
2. Step 2: Convert to fraction form
   85,667.40/128,427.16 = 41,233.04/x
3. Step 3: Cross multiply
   85,667.40x = 128,427.16 × 41,233.04
4. Step 4: Simplify right side
   85,667.40x = 5,295,442,225.37
5. Step 5: Solve for x
   x = 5,295,442,225.37/85,667.40
6. Step 6: Final answer
   x = 61,813.97