Finding the Fourth Proportional to 64,882.78, 89,538.24 and 35,074.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,882.78 : 89,538.24 = 35,074.78 : x
2. Step 2: Convert to fraction form
   64,882.78/89,538.24 = 35,074.78/x
3. Step 3: Cross multiply
   64,882.78x = 89,538.24 × 35,074.78
4. Step 4: Simplify right side
   64,882.78x = 3,140,534,069.59
5. Step 5: Solve for x
   x = 3,140,534,069.59/64,882.78
6. Step 6: Final answer
   x = 48,403.20