Finding the Fourth Proportional to 139,400.06, 209,100.78 and 34,219.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,400.06 : 209,100.78 = 34,219.04 : x
2. Step 2: Convert to fraction form
   139,400.06/209,100.78 = 34,219.04/x
3. Step 3: Cross multiply
   139,400.06x = 209,100.78 × 34,219.04
4. Step 4: Simplify right side
   139,400.06x = 7,155,226,909.35
5. Step 5: Solve for x
   x = 7,155,226,909.35/139,400.06
6. Step 6: Final answer
   x = 51,328.72