Finding the Fourth Proportional to 85,077.42, 127,615.25 and 21,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   85,077.42 : 127,615.25 = 21,897.30 : x
2. Step 2: Convert to fraction form
   85,077.42/127,615.25 = 21,897.30/x
3. Step 3: Cross multiply
   85,077.42x = 127,615.25 × 21,897.30
4. Step 4: Simplify right side
   85,077.42x = 2,794,429,413.83
5. Step 5: Solve for x
   x = 2,794,429,413.83/85,077.42
6. Step 6: Final answer
   x = 32,845.72