Finding the Fourth Proportional to 76,857.54, 115,308.59 and 31,870.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,857.54 : 115,308.59 = 31,870.54 : x
2. Step 2: Convert to fraction form
   76,857.54/115,308.59 = 31,870.54/x
3. Step 3: Cross multiply
   76,857.54x = 115,308.59 × 31,870.54
4. Step 4: Simplify right side
   76,857.54x = 3,674,947,029.94
5. Step 5: Solve for x
   x = 3,674,947,029.94/76,857.54
6. Step 6: Final answer
   x = 47,815.05