Finding the Fourth Proportional to 31,077.57, 42,887.37 and 16,930.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.57 : 42,887.37 = 16,930.42 : x
2. Step 2: Convert to fraction form
   31,077.57/42,887.37 = 16,930.42/x
3. Step 3: Cross multiply
   31,077.57x = 42,887.37 × 16,930.42
4. Step 4: Simplify right side
   31,077.57x = 726,101,143.07
5. Step 5: Solve for x
   x = 726,101,143.07/31,077.57
6. Step 6: Final answer
   x = 23,364.15