Finding the Fourth Proportional to 81,431.82, 122,205.47 and 37,064.30

Step by Step Solution

1. Step 1: Write the proportion equation
   81,431.82 : 122,205.47 = 37,064.30 : x
2. Step 2: Convert to fraction form
   81,431.82/122,205.47 = 37,064.30/x
3. Step 3: Cross multiply
   81,431.82x = 122,205.47 × 37,064.30
4. Step 4: Simplify right side
   81,431.82x = 4,529,459,405.37
5. Step 5: Solve for x
   x = 4,529,459,405.37/81,431.82
6. Step 6: Final answer
   x = 55,622.72