Finding the Fourth Proportional to 59,915.58, 89,878.41 and 20,475.42

Step by Step Solution

1. Step 1: Write the proportion equation
   59,915.58 : 89,878.41 = 20,475.42 : x
2. Step 2: Convert to fraction form
   59,915.58/89,878.41 = 20,475.42/x
3. Step 3: Cross multiply
   59,915.58x = 89,878.41 × 20,475.42
4. Step 4: Simplify right side
   59,915.58x = 1,840,298,193.68
5. Step 5: Solve for x
   x = 1,840,298,193.68/59,915.58
6. Step 6: Final answer
   x = 30,714.85