Finding the Fourth Proportional to 31,063.62, 42,870.72 and 19,133.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,063.62 : 42,870.72 = 19,133.94 : x
2. Step 2: Convert to fraction form
   31,063.62/42,870.72 = 19,133.94/x
3. Step 3: Cross multiply
   31,063.62x = 42,870.72 × 19,133.94
4. Step 4: Simplify right side
   31,063.62x = 820,285,784.24
5. Step 5: Solve for x
   x = 820,285,784.24/31,063.62
6. Step 6: Final answer
   x = 26,406.64