Finding the Fourth Proportional to 31,059.01, 42,855.51 and 19,730.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.01 : 42,855.51 = 19,730.35 : x
2. Step 2: Convert to fraction form
   31,059.01/42,855.51 = 19,730.35/x
3. Step 3: Cross multiply
   31,059.01x = 42,855.51 × 19,730.35
4. Step 4: Simplify right side
   31,059.01x = 845,554,339.29
5. Step 5: Solve for x
   x = 845,554,339.29/31,059.01
6. Step 6: Final answer
   x = 27,224.12