Finding the Fourth Proportional to 39,978.25, 55,174.85 and 23,211.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,978.25 : 55,174.85 = 23,211.25 : x
2. Step 2: Convert to fraction form
   39,978.25/55,174.85 = 23,211.25/x
3. Step 3: Cross multiply
   39,978.25x = 55,174.85 × 23,211.25
4. Step 4: Simplify right side
   39,978.25x = 1,280,677,121.01
5. Step 5: Solve for x
   x = 1,280,677,121.01/39,978.25
6. Step 6: Final answer
   x = 32,034.35