Finding the Fourth Proportional to 57,200.58, 78,868.17 and 49,229.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,200.58 : 78,868.17 = 49,229.10 : x
2. Step 2: Convert to fraction form
   57,200.58/78,868.17 = 49,229.10/x
3. Step 3: Cross multiply
   57,200.58x = 78,868.17 × 49,229.10
4. Step 4: Simplify right side
   57,200.58x = 3,882,609,027.75
5. Step 5: Solve for x
   x = 3,882,609,027.75/57,200.58
6. Step 6: Final answer
   x = 67,877.09