Finding the Fourth Proportional to 63,808.86, 88,041.18 and 53,638.55

Step by Step Solution

1. Step 1: Write the proportion equation
   63,808.86 : 88,041.18 = 53,638.55 : x
2. Step 2: Convert to fraction form
   63,808.86/88,041.18 = 53,638.55/x
3. Step 3: Cross multiply
   63,808.86x = 88,041.18 × 53,638.55
4. Step 4: Simplify right side
   63,808.86x = 4,722,401,520.10
5. Step 5: Solve for x
   x = 4,722,401,520.10/63,808.86
6. Step 6: Final answer
   x = 74,008.55