Finding the Fourth Proportional to 139,706.45, 209,557.61 and 34,525.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,706.45 : 209,557.61 = 34,525.42 : x
2. Step 2: Convert to fraction form
   139,706.45/209,557.61 = 34,525.42/x
3. Step 3: Cross multiply
   139,706.45x = 209,557.61 × 34,525.42
4. Step 4: Simplify right side
   139,706.45x = 7,235,063,932.40
5. Step 5: Solve for x
   x = 7,235,063,932.40/139,706.45
6. Step 6: Final answer
   x = 51,787.62