Finding the Fourth Proportional to 85,577.58, 128,353.41 and 32,979.42

Step by Step Solution

1. Step 1: Write the proportion equation
   85,577.58 : 128,353.41 = 32,979.42 : x
2. Step 2: Convert to fraction form
   85,577.58/128,353.41 = 32,979.42/x
3. Step 3: Cross multiply
   85,577.58x = 128,353.41 × 32,979.42
4. Step 4: Simplify right side
   85,577.58x = 4,233,021,016.82
5. Step 5: Solve for x
   x = 4,233,021,016.82/85,577.58
6. Step 6: Final answer
   x = 49,464.14