Finding the Fourth Proportional to 65,673, 98,483.99 and 21,289.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,673 : 98,483.99 = 21,289.05 : x
2. Step 2: Convert to fraction form
   65,673/98,483.99 = 21,289.05/x
3. Step 3: Cross multiply
   65,673x = 98,483.99 × 21,289.05
4. Step 4: Simplify right side
   65,673x = 2,096,630,480.86
5. Step 5: Solve for x
   x = 2,096,630,480.86/65,673
6. Step 6: Final answer
   x = 31,925.30