Finding the Fourth Proportional to 85,667.78, 128,427.75 and 41,233.34

Step by Step Solution

1. Step 1: Write the proportion equation
   85,667.78 : 128,427.75 = 41,233.34 : x
2. Step 2: Convert to fraction form
   85,667.78/128,427.75 = 41,233.34/x
3. Step 3: Cross multiply
   85,667.78x = 128,427.75 × 41,233.34
4. Step 4: Simplify right side
   85,667.78x = 5,295,505,081.19
5. Step 5: Solve for x
   x = 5,295,505,081.19/85,667.78
6. Step 6: Final answer
   x = 61,814.43