Finding the Fourth Proportional to 31,038.07, 42,832.53 and 16,891.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,038.07 : 42,832.53 = 16,891.01 : x
2. Step 2: Convert to fraction form
   31,038.07/42,832.53 = 16,891.01/x
3. Step 3: Cross multiply
   31,038.07x = 42,832.53 × 16,891.01
4. Step 4: Simplify right side
   31,038.07x = 723,484,608.10
5. Step 5: Solve for x
   x = 723,484,608.10/31,038.07
6. Step 6: Final answer
   x = 23,309.59