Finding the Fourth Proportional to 57,759.50, 86,660.72 and 35,316.15

Step by Step Solution

1. Step 1: Write the proportion equation
   57,759.50 : 86,660.72 = 35,316.15 : x
2. Step 2: Convert to fraction form
   57,759.50/86,660.72 = 35,316.15/x
3. Step 3: Cross multiply
   57,759.50x = 86,660.72 × 35,316.15
4. Step 4: Simplify right side
   57,759.50x = 3,060,522,810.05
5. Step 5: Solve for x
   x = 3,060,522,810.05/57,759.50
6. Step 6: Final answer
   x = 52,987.35