Finding the Fourth Proportional to 85,387.09, 128,086.79 and 32,796.57

Step by Step Solution

1. Step 1: Write the proportion equation
   85,387.09 : 128,086.79 = 32,796.57 : x
2. Step 2: Convert to fraction form
   85,387.09/128,086.79 = 32,796.57/x
3. Step 3: Cross multiply
   85,387.09x = 128,086.79 × 32,796.57
4. Step 4: Simplify right side
   85,387.09x = 4,200,807,374.31
5. Step 5: Solve for x
   x = 4,200,807,374.31/85,387.09
6. Step 6: Final answer
   x = 49,197.22