Finding the Fourth Proportional to 31,072.84, 42,880.68 and 16,925.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.84 : 42,880.68 = 16,925.68 : x
2. Step 2: Convert to fraction form
   31,072.84/42,880.68 = 16,925.68/x
3. Step 3: Cross multiply
   31,072.84x = 42,880.68 × 16,925.68
4. Step 4: Simplify right side
   31,072.84x = 725,784,667.86
5. Step 5: Solve for x
   x = 725,784,667.86/31,072.84
6. Step 6: Final answer
   x = 23,357.53