Finding the Fourth Proportional to 81,706.37, 122,497.27 and 42,238.31

Step by Step Solution

1. Step 1: Write the proportion equation
   81,706.37 : 122,497.27 = 42,238.31 : x
2. Step 2: Convert to fraction form
   81,706.37/122,497.27 = 42,238.31/x
3. Step 3: Cross multiply
   81,706.37x = 122,497.27 × 42,238.31
4. Step 4: Simplify right side
   81,706.37x = 5,174,076,946.33
5. Step 5: Solve for x
   x = 5,174,076,946.33/81,706.37
6. Step 6: Final answer
   x = 63,325.26