Finding the Fourth Proportional to 31,036.13, 42,830.06 and 16,889.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.13 : 42,830.06 = 16,889.07 : x
2. Step 2: Convert to fraction form
   31,036.13/42,830.06 = 16,889.07/x
3. Step 3: Cross multiply
   31,036.13x = 42,830.06 × 16,889.07
4. Step 4: Simplify right side
   31,036.13x = 723,359,797.00
5. Step 5: Solve for x
   x = 723,359,797.00/31,036.13
6. Step 6: Final answer
   x = 23,307.03