Finding the Fourth Proportional to 57,011.31, 85,541.55 and 30,710.79

Step by Step Solution

1. Step 1: Write the proportion equation
   57,011.31 : 85,541.55 = 30,710.79 : x
2. Step 2: Convert to fraction form
   57,011.31/85,541.55 = 30,710.79/x
3. Step 3: Cross multiply
   57,011.31x = 85,541.55 × 30,710.79
4. Step 4: Simplify right side
   57,011.31x = 2,627,048,578.32
5. Step 5: Solve for x
   x = 2,627,048,578.32/57,011.31
6. Step 6: Final answer
   x = 46,079.43