Finding the Fourth Proportional to 58,306.29, 87,466.56 and 20,870.31

Step by Step Solution

1. Step 1: Write the proportion equation
   58,306.29 : 87,466.56 = 20,870.31 : x
2. Step 2: Convert to fraction form
   58,306.29/87,466.56 = 20,870.31/x
3. Step 3: Cross multiply
   58,306.29x = 87,466.56 × 20,870.31
4. Step 4: Simplify right side
   58,306.29x = 1,825,454,221.83
5. Step 5: Solve for x
   x = 1,825,454,221.83/58,306.29
6. Step 6: Final answer
   x = 31,308.02