Finding the Fourth Proportional to 139,525.31, 209,287.98 and 41,029.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,525.31 : 209,287.98 = 41,029.31 : x
2. Step 2: Convert to fraction form
   139,525.31/209,287.98 = 41,029.31/x
3. Step 3: Cross multiply
   139,525.31x = 209,287.98 × 41,029.31
4. Step 4: Simplify right side
   139,525.31x = 8,586,941,933.91
5. Step 5: Solve for x
   x = 8,586,941,933.91/139,525.31
6. Step 6: Final answer
   x = 61,543.97