Finding the Fourth Proportional to 81,639.50, 122,496.89 and 37,279.85

Step by Step Solution

1. Step 1: Write the proportion equation
   81,639.50 : 122,496.89 = 37,279.85 : x
2. Step 2: Convert to fraction form
   81,639.50/122,496.89 = 37,279.85/x
3. Step 3: Cross multiply
   81,639.50x = 122,496.89 × 37,279.85
4. Step 4: Simplify right side
   81,639.50x = 4,566,664,885.78
5. Step 5: Solve for x
   x = 4,566,664,885.78/81,639.50
6. Step 6: Final answer
   x = 55,936.96