Finding the Fourth Proportional to 49,851.30, 69,660.60 and 49,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   49,851.30 : 69,660.60 = 49,851.30 : x
2. Step 2: Convert to fraction form
   49,851.30/69,660.60 = 49,851.30/x
3. Step 3: Cross multiply
   49,851.30x = 69,660.60 × 49,851.30
4. Step 4: Simplify right side
   49,851.30x = 3,472,671,468.78
5. Step 5: Solve for x
   x = 3,472,671,468.78/49,851.30
6. Step 6: Final answer
   x = 69,660.60