Finding the Fourth Proportional to 139,713.16, 209,584.74 and 59,759.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,713.16 : 209,584.74 = 59,759.43 : x
2. Step 2: Convert to fraction form
   139,713.16/209,584.74 = 59,759.43/x
3. Step 3: Cross multiply
   139,713.16x = 209,584.74 × 59,759.43
4. Step 4: Simplify right side
   139,713.16x = 12,524,664,599.10
5. Step 5: Solve for x
   x = 12,524,664,599.10/139,713.16
6. Step 6: Final answer
   x = 89,645.56