Finding the Fourth Proportional to 59,719.82, 89,599.18 and 28,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,719.82 : 89,599.18 = 28,557.50 : x
2. Step 2: Convert to fraction form
   59,719.82/89,599.18 = 28,557.50/x
3. Step 3: Cross multiply
   59,719.82x = 89,599.18 × 28,557.50
4. Step 4: Simplify right side
   59,719.82x = 2,558,728,582.85
5. Step 5: Solve for x
   x = 2,558,728,582.85/59,719.82
6. Step 6: Final answer
   x = 42,845.55