Finding the Fourth Proportional to 59,720.82, 89,600.68 and 28,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,720.82 : 89,600.68 = 28,558.50 : x
2. Step 2: Convert to fraction form
   59,720.82/89,600.68 = 28,558.50/x
3. Step 3: Cross multiply
   59,720.82x = 89,600.68 × 28,558.50
4. Step 4: Simplify right side
   59,720.82x = 2,558,861,019.78
5. Step 5: Solve for x
   x = 2,558,861,019.78/59,720.82
6. Step 6: Final answer
   x = 42,847.05