Finding the Fourth Proportional to 139,055, 208,588.98 and 40,559

Step by Step Solution

1. Step 1: Write the proportion equation
   139,055 : 208,588.98 = 40,559 : x
2. Step 2: Convert to fraction form
   139,055/208,588.98 = 40,559/x
3. Step 3: Cross multiply
   139,055x = 208,588.98 × 40,559
4. Step 4: Simplify right side
   139,055x = 8,460,160,439.82
5. Step 5: Solve for x
   x = 8,460,160,439.82/139,055
6. Step 6: Final answer
   x = 60,840.39