Finding the Fourth Proportional to 81,621.69, 122,418.67 and 37,238.01

Step by Step Solution

1. Step 1: Write the proportion equation
   81,621.69 : 122,418.67 = 37,238.01 : x
2. Step 2: Convert to fraction form
   81,621.69/122,418.67 = 37,238.01/x
3. Step 3: Cross multiply
   81,621.69x = 122,418.67 × 37,238.01
4. Step 4: Simplify right side
   81,621.69x = 4,558,627,657.65
5. Step 5: Solve for x
   x = 4,558,627,657.65/81,621.69
6. Step 6: Final answer
   x = 55,850.69