Finding the Fourth Proportional to 139,986.35, 209,979.47 and 34,805.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,986.35 : 209,979.47 = 34,805.32 : x
2. Step 2: Convert to fraction form
   139,986.35/209,979.47 = 34,805.32/x
3. Step 3: Cross multiply
   139,986.35x = 209,979.47 × 34,805.32
4. Step 4: Simplify right side
   139,986.35x = 7,308,402,646.78
5. Step 5: Solve for x
   x = 7,308,402,646.78/139,986.35
6. Step 6: Final answer
   x = 52,207.97