Finding the Fourth Proportional to 81,801.33, 122,767.62 and 42,369.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,801.33 : 122,767.62 = 42,369.72 : x
2. Step 2: Convert to fraction form
   81,801.33/122,767.62 = 42,369.72/x
3. Step 3: Cross multiply
   81,801.33x = 122,767.62 × 42,369.72
4. Step 4: Simplify right side
   81,801.33x = 5,201,629,684.47
5. Step 5: Solve for x
   x = 5,201,629,684.47/81,801.33
6. Step 6: Final answer
   x = 63,588.57