Finding the Fourth Proportional to 31,064.84, 42,870.02 and 16,917.64

Step by Step Solution

1. Step 1: Write the proportion equation
   31,064.84 : 42,870.02 = 16,917.64 : x
2. Step 2: Convert to fraction form
   31,064.84/42,870.02 = 16,917.64/x
3. Step 3: Cross multiply
   31,064.84x = 42,870.02 × 16,917.64
4. Step 4: Simplify right side
   31,064.84x = 725,259,565.15
5. Step 5: Solve for x
   x = 725,259,565.15/31,064.84
6. Step 6: Final answer
   x = 23,346.64