Finding the Fourth Proportional to 139,923.36, 209,884.32 and 59,949.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,923.36 : 209,884.32 = 59,949.60 : x
2. Step 2: Convert to fraction form
   139,923.36/209,884.32 = 59,949.60/x
3. Step 3: Cross multiply
   139,923.36x = 209,884.32 × 59,949.60
4. Step 4: Simplify right side
   139,923.36x = 12,582,481,030.27
5. Step 5: Solve for x
   x = 12,582,481,030.27/139,923.36
6. Step 6: Final answer
   x = 89,924.09