Finding the Fourth Proportional to 65,050.48, 89,779.35 and 39,561

Step by Step Solution

1. Step 1: Write the proportion equation
   65,050.48 : 89,779.35 = 39,561 : x
2. Step 2: Convert to fraction form
   65,050.48/89,779.35 = 39,561/x
3. Step 3: Cross multiply
   65,050.48x = 89,779.35 × 39,561
4. Step 4: Simplify right side
   65,050.48x = 3,551,760,865.35
5. Step 5: Solve for x
   x = 3,551,760,865.35/65,050.48
6. Step 6: Final answer
   x = 54,600.07