Finding the Fourth Proportional to 72,515.74, 99,885.27 and 51,258.46

Step by Step Solution

1. Step 1: Write the proportion equation
   72,515.74 : 99,885.27 = 51,258.46 : x
2. Step 2: Convert to fraction form
   72,515.74/99,885.27 = 51,258.46/x
3. Step 3: Cross multiply
   72,515.74x = 99,885.27 × 51,258.46
4. Step 4: Simplify right side
   72,515.74x = 5,119,965,116.88
5. Step 5: Solve for x
   x = 5,119,965,116.88/72,515.74
6. Step 6: Final answer
   x = 70,604.88