Finding the Fourth Proportional to 85,311, 127,713.69 and 63,223.47

Step by Step Solution

1. Step 1: Write the proportion equation
   85,311 : 127,713.69 = 63,223.47 : x
2. Step 2: Convert to fraction form
   85,311/127,713.69 = 63,223.47/x
3. Step 3: Cross multiply
   85,311x = 127,713.69 × 63,223.47
4. Step 4: Simplify right side
   85,311x = 8,074,502,648.30
5. Step 5: Solve for x
   x = 8,074,502,648.30/85,311
6. Step 6: Final answer
   x = 94,647.85