Finding the Fourth Proportional to 31,251.83, 43,127.34 and 28,710.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,251.83 : 43,127.34 = 28,710.14 : x
2. Step 2: Convert to fraction form
   31,251.83/43,127.34 = 28,710.14/x
3. Step 3: Cross multiply
   31,251.83x = 43,127.34 × 28,710.14
4. Step 4: Simplify right side
   31,251.83x = 1,238,191,969.23
5. Step 5: Solve for x
   x = 1,238,191,969.23/31,251.83
6. Step 6: Final answer
   x = 39,619.82