Finding the Fourth Proportional to 31,047.91, 42,845.03 and 16,900.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,047.91 : 42,845.03 = 16,900.45 : x
2. Step 2: Convert to fraction form
   31,047.91/42,845.03 = 16,900.45/x
3. Step 3: Cross multiply
   31,047.91x = 42,845.03 × 16,900.45
4. Step 4: Simplify right side
   31,047.91x = 724,100,202.76
5. Step 5: Solve for x
   x = 724,100,202.76/31,047.91
6. Step 6: Final answer
   x = 23,322.03