Finding the Fourth Proportional to 57,026.37, 78,689.52 and 31,529.30

Step by Step Solution

1. Step 1: Write the proportion equation
   57,026.37 : 78,689.52 = 31,529.30 : x
2. Step 2: Convert to fraction form
   57,026.37/78,689.52 = 31,529.30/x
3. Step 3: Cross multiply
   57,026.37x = 78,689.52 × 31,529.30
4. Step 4: Simplify right side
   57,026.37x = 2,481,025,089.49
5. Step 5: Solve for x
   x = 2,481,025,089.49/57,026.37
6. Step 6: Final answer
   x = 43,506.63