Finding the Fourth Proportional to 105,089.59, 157,578.72 and 45,856.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,089.59 : 157,578.72 = 45,856.09 : x
2. Step 2: Convert to fraction form
   105,089.59/157,578.72 = 45,856.09/x
3. Step 3: Cross multiply
   105,089.59x = 157,578.72 × 45,856.09
4. Step 4: Simplify right side
   105,089.59x = 7,225,943,966.40
5. Step 5: Solve for x
   x = 7,225,943,966.40/105,089.59
6. Step 6: Final answer
   x = 68,759.85