Finding the Fourth Proportional to 76,087.56, 114,155.68 and 31,719

Step by Step Solution

1. Step 1: Write the proportion equation
   76,087.56 : 114,155.68 = 31,719 : x
2. Step 2: Convert to fraction form
   76,087.56/114,155.68 = 31,719/x
3. Step 3: Cross multiply
   76,087.56x = 114,155.68 × 31,719
4. Step 4: Simplify right side
   76,087.56x = 3,620,904,013.92
5. Step 5: Solve for x
   x = 3,620,904,013.92/76,087.56
6. Step 6: Final answer
   x = 47,588.65