Finding the Fourth Proportional to 265,093.31, 397,667.58 and 85,133.27

Step by Step Solution

1. Step 1: Write the proportion equation
   265,093.31 : 397,667.58 = 85,133.27 : x
2. Step 2: Convert to fraction form
   265,093.31/397,667.58 = 85,133.27/x
3. Step 3: Cross multiply
   265,093.31x = 397,667.58 × 85,133.27
4. Step 4: Simplify right side
   265,093.31x = 33,854,741,458.39
5. Step 5: Solve for x
   x = 33,854,741,458.39/265,093.31
6. Step 6: Final answer
   x = 127,708.77