Finding the Fourth Proportional to 139,381.08, 209,071.67 and 34,200.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,381.08 : 209,071.67 = 34,200.05 : x
2. Step 2: Convert to fraction form
   139,381.08/209,071.67 = 34,200.05/x
3. Step 3: Cross multiply
   139,381.08x = 209,071.67 × 34,200.05
4. Step 4: Simplify right side
   139,381.08x = 7,150,260,351.22
5. Step 5: Solve for x
   x = 7,150,260,351.22/139,381.08
6. Step 6: Final answer
   x = 51,300.08