Finding the Fourth Proportional to 31,056.39, 42,858.59 and 16,910.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.39 : 42,858.59 = 16,910.01 : x
2. Step 2: Convert to fraction form
   31,056.39/42,858.59 = 16,910.01/x
3. Step 3: Cross multiply
   31,056.39x = 42,858.59 × 16,910.01
4. Step 4: Simplify right side
   31,056.39x = 724,739,100.94
5. Step 5: Solve for x
   x = 724,739,100.94/31,056.39
6. Step 6: Final answer
   x = 23,336.23