Finding the Fourth Proportional to 57,196.58, 78,862.65 and 49,225.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,196.58 : 78,862.65 = 49,225.10 : x
2. Step 2: Convert to fraction form
   57,196.58/78,862.65 = 49,225.10/x
3. Step 3: Cross multiply
   57,196.58x = 78,862.65 × 49,225.10
4. Step 4: Simplify right side
   57,196.58x = 3,882,021,832.52
5. Step 5: Solve for x
   x = 3,882,021,832.52/57,196.58
6. Step 6: Final answer
   x = 67,871.57