Finding the Fourth Proportional to 139,571.24, 209,356.98 and 34,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,571.24 : 209,356.98 = 34,390.22 : x
2. Step 2: Convert to fraction form
   139,571.24/209,356.98 = 34,390.22/x
3. Step 3: Cross multiply
   139,571.24x = 209,356.98 × 34,390.22
4. Step 4: Simplify right side
   139,571.24x = 7,199,832,428.78
5. Step 5: Solve for x
   x = 7,199,832,428.78/139,571.24
6. Step 6: Final answer
   x = 51,585.36