Finding the Fourth Proportional to 85,216.78, 117,599.55 and 49,427.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,216.78 : 117,599.55 = 49,427.98 : x
2. Step 2: Convert to fraction form
   85,216.78/117,599.55 = 49,427.98/x
3. Step 3: Cross multiply
   85,216.78x = 117,599.55 × 49,427.98
4. Step 4: Simplify right side
   85,216.78x = 5,812,708,205.41
5. Step 5: Solve for x
   x = 5,812,708,205.41/85,216.78
6. Step 6: Final answer
   x = 68,210.84