Finding the Fourth Proportional to 49,315.20, 68,055.45 and 45,548.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49,315.20 : 68,055.45 = 45,548.10 : x
2. Step 2: Convert to fraction form
   49,315.20/68,055.45 = 45,548.10/x
3. Step 3: Cross multiply
   49,315.20x = 68,055.45 × 45,548.10
4. Step 4: Simplify right side
   49,315.20x = 3,099,796,442.15
5. Step 5: Solve for x
   x = 3,099,796,442.15/49,315.20
6. Step 6: Final answer
   x = 62,856.82