Finding the Fourth Proportional to 31,886.79, 43,819.06 and 30,423.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,886.79 : 43,819.06 = 30,423.31 : x
2. Step 2: Convert to fraction form
   31,886.79/43,819.06 = 30,423.31/x
3. Step 3: Cross multiply
   31,886.79x = 43,819.06 × 30,423.31
4. Step 4: Simplify right side
   31,886.79x = 1,333,120,846.29
5. Step 5: Solve for x
   x = 1,333,120,846.29/31,886.79
6. Step 6: Final answer
   x = 41,807.94