Finding the Fourth Proportional to 85,418.57, 117,900.43 and 49,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,418.57 : 117,900.43 = 49,123.98 : x
2. Step 2: Convert to fraction form
   85,418.57/117,900.43 = 49,123.98/x
3. Step 3: Cross multiply
   85,418.57x = 117,900.43 × 49,123.98
4. Step 4: Simplify right side
   85,418.57x = 5,791,738,150.39
5. Step 5: Solve for x
   x = 5,791,738,150.39/85,418.57
6. Step 6: Final answer
   x = 67,804.20