Finding the Fourth Proportional to 52,842.45, 79,263 and 12,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,842.45 : 79,263 = 12,861.50 : x
2. Step 2: Convert to fraction form
   52,842.45/79,263 = 12,861.50/x
3. Step 3: Cross multiply
   52,842.45x = 79,263 × 12,861.50
4. Step 4: Simplify right side
   52,842.45x = 1,019,441,074.50
5. Step 5: Solve for x
   x = 1,019,441,074.50/52,842.45
6. Step 6: Final answer
   x = 19,292.09