Finding the Fourth Proportional to 57,030.47, 78,698.84 and 31,535.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,030.47 : 78,698.84 = 31,535.31 : x
2. Step 2: Convert to fraction form
   57,030.47/78,698.84 = 31,535.31/x
3. Step 3: Cross multiply
   57,030.47x = 78,698.84 × 31,535.31
4. Step 4: Simplify right side
   57,030.47x = 2,481,792,158.36
5. Step 5: Solve for x
   x = 2,481,792,158.36/57,030.47
6. Step 6: Final answer
   x = 43,516.95