Finding the Fourth Proportional to 139,241.71, 208,870.62 and 39,393.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,241.71 : 208,870.62 = 39,393.54 : x
2. Step 2: Convert to fraction form
   139,241.71/208,870.62 = 39,393.54/x
3. Step 3: Cross multiply
   139,241.71x = 208,870.62 × 39,393.54
4. Step 4: Simplify right side
   139,241.71x = 8,228,153,123.79
5. Step 5: Solve for x
   x = 8,228,153,123.79/139,241.71
6. Step 6: Final answer
   x = 59,092.59