Finding the Fourth Proportional to 85,381, 117,825.54 and 49,591.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,381 : 117,825.54 = 49,591.72 : x
2. Step 2: Convert to fraction form
   85,381/117,825.54 = 49,591.72/x
3. Step 3: Cross multiply
   85,381x = 117,825.54 × 49,591.72
4. Step 4: Simplify right side
   85,381x = 5,843,171,188.53
5. Step 5: Solve for x
   x = 5,843,171,188.53/85,381
6. Step 6: Final answer
   x = 68,436.43