Finding the Fourth Proportional to 57,870.84, 86,762.58 and 20,414.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,870.84 : 86,762.58 = 20,414.52 : x
2. Step 2: Convert to fraction form
   57,870.84/86,762.58 = 20,414.52/x
3. Step 3: Cross multiply
   57,870.84x = 86,762.58 × 20,414.52
4. Step 4: Simplify right side
   57,870.84x = 1,771,216,424.66
5. Step 5: Solve for x
   x = 1,771,216,424.66/57,870.84
6. Step 6: Final answer
   x = 30,606.37