Finding the Fourth Proportional to 139,824.63, 209,734.92 and 34,642.89

Step by Step Solution

1. Step 1: Write the proportion equation
   139,824.63 : 209,734.92 = 34,642.89 : x
2. Step 2: Convert to fraction form
   139,824.63/209,734.92 = 34,642.89/x
3. Step 3: Cross multiply
   139,824.63x = 209,734.92 × 34,642.89
4. Step 4: Simplify right side
   139,824.63x = 7,265,823,762.72
5. Step 5: Solve for x
   x = 7,265,823,762.72/139,824.63
6. Step 6: Final answer
   x = 51,963.83