Finding the Fourth Proportional to 31,077.89, 42,887.46 and 16,930.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.89 : 42,887.46 = 16,930.74 : x
2. Step 2: Convert to fraction form
   31,077.89/42,887.46 = 16,930.74/x
3. Step 3: Cross multiply
   31,077.89x = 42,887.46 × 16,930.74
4. Step 4: Simplify right side
   31,077.89x = 726,116,434.52
5. Step 5: Solve for x
   x = 726,116,434.52/31,077.89
6. Step 6: Final answer
   x = 23,364.41