Finding the Fourth Proportional to 113,589, 170,405.37 and 51,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,589 : 170,405.37 = 51,259.50 : x
2. Step 2: Convert to fraction form
   113,589/170,405.37 = 51,259.50/x
3. Step 3: Cross multiply
   113,589x = 170,405.37 × 51,259.50
4. Step 4: Simplify right side
   113,589x = 8,734,894,063.52
5. Step 5: Solve for x
   x = 8,734,894,063.52/113,589
6. Step 6: Final answer
   x = 76,899.12