Finding the Fourth Proportional to 61,049, 91,989.50 and 50,198.76

Step by Step Solution

1. Step 1: Write the proportion equation
   61,049 : 91,989.50 = 50,198.76 : x
2. Step 2: Convert to fraction form
   61,049/91,989.50 = 50,198.76/x
3. Step 3: Cross multiply
   61,049x = 91,989.50 × 50,198.76
4. Step 4: Simplify right side
   61,049x = 4,617,758,833.02
5. Step 5: Solve for x
   x = 4,617,758,833.02/61,049
6. Step 6: Final answer
   x = 75,640.20