Finding the Fourth Proportional to 52,900.89, 72,912.32 and 50,409.53

Step by Step Solution

1. Step 1: Write the proportion equation
   52,900.89 : 72,912.32 = 50,409.53 : x
2. Step 2: Convert to fraction form
   52,900.89/72,912.32 = 50,409.53/x
3. Step 3: Cross multiply
   52,900.89x = 72,912.32 × 50,409.53
4. Step 4: Simplify right side
   52,900.89x = 3,675,475,530.36
5. Step 5: Solve for x
   x = 3,675,475,530.36/52,900.89
6. Step 6: Final answer
   x = 69,478.53