Finding the Fourth Proportional to 31,017.11, 42,804.06 and 16,870.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,017.11 : 42,804.06 = 16,870.00 : x
2. Step 2: Convert to fraction form
   31,017.11/42,804.06 = 16,870.00/x
3. Step 3: Cross multiply
   31,017.11x = 42,804.06 × 16,870.00
4. Step 4: Simplify right side
   31,017.11x = 722,104,278.18
5. Step 5: Solve for x
   x = 722,104,278.18/31,017.11
6. Step 6: Final answer
   x = 23,280.84