Finding the Fourth Proportional to 31,077.98, 42,887.64 and 16,930.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.98 : 42,887.64 = 16,930.86 : x
2. Step 2: Convert to fraction form
   31,077.98/42,887.64 = 16,930.86/x
3. Step 3: Cross multiply
   31,077.98x = 42,887.64 × 16,930.86
4. Step 4: Simplify right side
   31,077.98x = 726,124,628.57
5. Step 5: Solve for x
   x = 726,124,628.57/31,077.98
6. Step 6: Final answer
   x = 23,364.60