Finding the Fourth Proportional to 49,811.10, 69,910.50 and 49,811.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49,811.10 : 69,910.50 = 49,811.10 : x
2. Step 2: Convert to fraction form
   49,811.10/69,910.50 = 49,811.10/x
3. Step 3: Cross multiply
   49,811.10x = 69,910.50 × 49,811.10
4. Step 4: Simplify right side
   49,811.10x = 3,482,318,906.55
5. Step 5: Solve for x
   x = 3,482,318,906.55/49,811.10
6. Step 6: Final answer
   x = 69,910.50