Finding the Fourth Proportional to 31,047.76, 42,846.47 and 16,900.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,047.76 : 42,846.47 = 16,900.84 : x
2. Step 2: Convert to fraction form
   31,047.76/42,846.47 = 16,900.84/x
3. Step 3: Cross multiply
   31,047.76x = 42,846.47 × 16,900.84
4. Step 4: Simplify right side
   31,047.76x = 724,141,334.03
5. Step 5: Solve for x
   x = 724,141,334.03/31,047.76
6. Step 6: Final answer
   x = 23,323.46