Finding the Fourth Proportional to 113,626.40, 156,804.15 and 62,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,626.40 : 156,804.15 = 62,638.72 : x
2. Step 2: Convert to fraction form
   113,626.40/156,804.15 = 62,638.72/x
3. Step 3: Cross multiply
   113,626.40x = 156,804.15 × 62,638.72
4. Step 4: Simplify right side
   113,626.40x = 9,822,011,089.57
5. Step 5: Solve for x
   x = 9,822,011,089.57/113,626.40
6. Step 6: Final answer
   x = 86,441.28