Finding the Fourth Proportional to 139,759.22, 209,636.30 and 34,578.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,759.22 : 209,636.30 = 34,578.16 : x
2. Step 2: Convert to fraction form
   139,759.22/209,636.30 = 34,578.16/x
3. Step 3: Cross multiply
   139,759.22x = 209,636.30 × 34,578.16
4. Step 4: Simplify right side
   139,759.22x = 7,248,837,085.56
5. Step 5: Solve for x
   x = 7,248,837,085.56/139,759.22
6. Step 6: Final answer
   x = 51,866.61