Finding the Fourth Proportional to 63,590.78, 87,171.77 and 63,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   63,590.78 : 87,171.77 = 63,002.72 : x
2. Step 2: Convert to fraction form
   63,590.78/87,171.77 = 63,002.72/x
3. Step 3: Cross multiply
   63,590.78x = 87,171.77 × 63,002.72
4. Step 4: Simplify right side
   63,590.78x = 5,492,058,992.65
5. Step 5: Solve for x
   x = 5,492,058,992.65/63,590.78
6. Step 6: Final answer
   x = 86,365.65