Finding the Fourth Proportional to 139,989.18, 209,984.56 and 34,808.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,989.18 : 209,984.56 = 34,808.16 : x
2. Step 2: Convert to fraction form
   139,989.18/209,984.56 = 34,808.16/x
3. Step 3: Cross multiply
   139,989.18x = 209,984.56 × 34,808.16
4. Step 4: Simplify right side
   139,989.18x = 7,309,176,162.01
5. Step 5: Solve for x
   x = 7,309,176,162.01/139,989.18
6. Step 6: Final answer
   x = 52,212.44