Finding the Fourth Proportional to 31,077.74, 42,887.94 and 16,930.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.74 : 42,887.94 = 16,930.56 : x
2. Step 2: Convert to fraction form
   31,077.74/42,887.94 = 16,930.56/x
3. Step 3: Cross multiply
   31,077.74x = 42,887.94 × 16,930.56
4. Step 4: Simplify right side
   31,077.74x = 726,116,841.45
5. Step 5: Solve for x
   x = 726,116,841.45/31,077.74
6. Step 6: Final answer
   x = 23,364.53