Finding the Fourth Proportional to 31,153.01, 42,990.55 and 17,005.95

Step by Step Solution

1. Step 1: Write the proportion equation
   31,153.01 : 42,990.55 = 17,005.95 : x
2. Step 2: Convert to fraction form
   31,153.01/42,990.55 = 17,005.95/x
3. Step 3: Cross multiply
   31,153.01x = 42,990.55 × 17,005.95
4. Step 4: Simplify right side
   31,153.01x = 731,095,101.26
5. Step 5: Solve for x
   x = 731,095,101.26/31,153.01
6. Step 6: Final answer
   x = 23,467.88