Finding the Fourth Proportional to 31,103.39, 42,921.43 and 16,955.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.39 : 42,921.43 = 16,955.93 : x
2. Step 2: Convert to fraction form
   31,103.39/42,921.43 = 16,955.93/x
3. Step 3: Cross multiply
   31,103.39x = 42,921.43 × 16,955.93
4. Step 4: Simplify right side
   31,103.39x = 727,772,827.49
5. Step 5: Solve for x
   x = 727,772,827.49/31,103.39
6. Step 6: Final answer
   x = 23,398.50