Finding the Fourth Proportional to 31,016.95, 42,803.27 and 16,870.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,016.95 : 42,803.27 = 16,870.03 : x
2. Step 2: Convert to fraction form
   31,016.95/42,803.27 = 16,870.03/x
3. Step 3: Cross multiply
   31,016.95x = 42,803.27 × 16,870.03
4. Step 4: Simplify right side
   31,016.95x = 722,092,449.00
5. Step 5: Solve for x
   x = 722,092,449.00/31,016.95
6. Step 6: Final answer
   x = 23,280.58