Finding the Fourth Proportional to 31,071.15, 42,878.16 and 16,924.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,071.15 : 42,878.16 = 16,924.01 : x
2. Step 2: Convert to fraction form
   31,071.15/42,878.16 = 16,924.01/x
3. Step 3: Cross multiply
   31,071.15x = 42,878.16 × 16,924.01
4. Step 4: Simplify right side
   31,071.15x = 725,670,194.23
5. Step 5: Solve for x
   x = 725,670,194.23/31,071.15
6. Step 6: Final answer
   x = 23,355.11