Finding the Fourth Proportional to 64,875.78, 89,528.58 and 35,067.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,875.78 : 89,528.58 = 35,067.78 : x
2. Step 2: Convert to fraction form
   64,875.78/89,528.58 = 35,067.78/x
3. Step 3: Cross multiply
   64,875.78x = 89,528.58 × 35,067.78
4. Step 4: Simplify right side
   64,875.78x = 3,139,568,547.15
5. Step 5: Solve for x
   x = 3,139,568,547.15/64,875.78
6. Step 6: Final answer
   x = 48,393.54