Finding the Fourth Proportional to 57,005.46, 85,513.86 and 46,574.28

Step by Step Solution

1. Step 1: Write the proportion equation
   57,005.46 : 85,513.86 = 46,574.28 : x
2. Step 2: Convert to fraction form
   57,005.46/85,513.86 = 46,574.28/x
3. Step 3: Cross multiply
   57,005.46x = 85,513.86 × 46,574.28
4. Step 4: Simplify right side
   57,005.46x = 3,982,746,459.52
5. Step 5: Solve for x
   x = 3,982,746,459.52/57,005.46
6. Step 6: Final answer
   x = 69,866.05