Finding the Fourth Proportional to 139,658.59, 209,488.32 and 34,477.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,658.59 : 209,488.32 = 34,477.57 : x
2. Step 2: Convert to fraction form
   139,658.59/209,488.32 = 34,477.57/x
3. Step 3: Cross multiply
   139,658.59x = 209,488.32 × 34,477.57
4. Step 4: Simplify right side
   139,658.59x = 7,222,648,216.98
5. Step 5: Solve for x
   x = 7,222,648,216.98/139,658.59
6. Step 6: Final answer
   x = 51,716.46