Finding the Fourth Proportional to 137,297.07, 205,787.48 and 53,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,297.07 : 205,787.48 = 53,020.10 : x
2. Step 2: Convert to fraction form
   137,297.07/205,787.48 = 53,020.10/x
3. Step 3: Cross multiply
   137,297.07x = 205,787.48 × 53,020.10
4. Step 4: Simplify right side
   137,297.07x = 10,910,871,474.31
5. Step 5: Solve for x
   x = 10,910,871,474.31/137,297.07
6. Step 6: Final answer
   x = 79,469.08