Finding the Fourth Proportional to 113,128.27, 156,107.72 and 62,138.37

Step by Step Solution

1. Step 1: Write the proportion equation
   113,128.27 : 156,107.72 = 62,138.37 : x
2. Step 2: Convert to fraction form
   113,128.27/156,107.72 = 62,138.37/x
3. Step 3: Cross multiply
   113,128.27x = 156,107.72 × 62,138.37
4. Step 4: Simplify right side
   113,128.27x = 9,700,278,426.66
5. Step 5: Solve for x
   x = 9,700,278,426.66/113,128.27
6. Step 6: Final answer
   x = 85,745.84