Finding the Fourth Proportional to 85,931.82, 128,904.65 and 32,649.33

Step by Step Solution

1. Step 1: Write the proportion equation
   85,931.82 : 128,904.65 = 32,649.33 : x
2. Step 2: Convert to fraction form
   85,931.82/128,904.65 = 32,649.33/x
3. Step 3: Cross multiply
   85,931.82x = 128,904.65 × 32,649.33
4. Step 4: Simplify right side
   85,931.82x = 4,208,650,173.88
5. Step 5: Solve for x
   x = 4,208,650,173.88/85,931.82
6. Step 6: Final answer
   x = 48,976.62