Finding the Fourth Proportional to 139,711.77, 209,567.72 and 46,217.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,711.77 : 209,567.72 = 46,217.52 : x
2. Step 2: Convert to fraction form
   139,711.77/209,567.72 = 46,217.52/x
3. Step 3: Cross multiply
   139,711.77x = 209,567.72 × 46,217.52
4. Step 4: Simplify right side
   139,711.77x = 9,685,699,011.53
5. Step 5: Solve for x
   x = 9,685,699,011.53/139,711.77
6. Step 6: Final answer
   x = 69,326.29