Finding the Fourth Proportional to 91,608.85, 137,107.09 and 52,155.37

Step by Step Solution

1. Step 1: Write the proportion equation
   91,608.85 : 137,107.09 = 52,155.37 : x
2. Step 2: Convert to fraction form
   91,608.85/137,107.09 = 52,155.37/x
3. Step 3: Cross multiply
   91,608.85x = 137,107.09 × 52,155.37
4. Step 4: Simplify right side
   91,608.85x = 7,150,871,008.57
5. Step 5: Solve for x
   x = 7,150,871,008.57/91,608.85
6. Step 6: Final answer
   x = 78,058.74