Finding the Fourth Proportional to 85,839.75, 128,781.50 and 32,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,839.75 : 128,781.50 = 32,553.50 : x
2. Step 2: Convert to fraction form
   85,839.75/128,781.50 = 32,553.50/x
3. Step 3: Cross multiply
   85,839.75x = 128,781.50 × 32,553.50
4. Step 4: Simplify right side
   85,839.75x = 4,192,287,753.58
5. Step 5: Solve for x
   x = 4,192,287,753.58/85,839.75
6. Step 6: Final answer
   x = 48,838.54