Finding the Fourth Proportional to 146,258.76, 219,404.61 and 57,500.58

Step by Step Solution

1. Step 1: Write the proportion equation
   146,258.76 : 219,404.61 = 57,500.58 : x
2. Step 2: Convert to fraction form
   146,258.76/219,404.61 = 57,500.58/x
3. Step 3: Cross multiply
   146,258.76x = 219,404.61 × 57,500.58
4. Step 4: Simplify right side
   146,258.76x = 12,615,892,329.67
5. Step 5: Solve for x
   x = 12,615,892,329.67/146,258.76
6. Step 6: Final answer
   x = 86,257.35