Finding the Fourth Proportional to 31,051.58, 42,850.91 and 16,904.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.58 : 42,850.91 = 16,904.39 : x
2. Step 2: Convert to fraction form
   31,051.58/42,850.91 = 16,904.39/x
3. Step 3: Cross multiply
   31,051.58x = 42,850.91 × 16,904.39
4. Step 4: Simplify right side
   31,051.58x = 724,368,322.50
5. Step 5: Solve for x
   x = 724,368,322.50/31,051.58
6. Step 6: Final answer
   x = 23,327.91