Finding the Fourth Proportional to 63,658.72, 87,872.58 and 54,670.12

Step by Step Solution

1. Step 1: Write the proportion equation
   63,658.72 : 87,872.58 = 54,670.12 : x
2. Step 2: Convert to fraction form
   63,658.72/87,872.58 = 54,670.12/x
3. Step 3: Cross multiply
   63,658.72x = 87,872.58 × 54,670.12
4. Step 4: Simplify right side
   63,658.72x = 4,804,004,493.31
5. Step 5: Solve for x
   x = 4,804,004,493.31/63,658.72
6. Step 6: Final answer
   x = 75,464.99