Finding the Fourth Proportional to 51,217, 70,698.90 and 34,459.72

Step by Step Solution

1. Step 1: Write the proportion equation
   51,217 : 70,698.90 = 34,459.72 : x
2. Step 2: Convert to fraction form
   51,217/70,698.90 = 34,459.72/x
3. Step 3: Cross multiply
   51,217x = 70,698.90 × 34,459.72
4. Step 4: Simplify right side
   51,217x = 2,436,264,298.31
5. Step 5: Solve for x
   x = 2,436,264,298.31/51,217
6. Step 6: Final answer
   x = 47,567.49