Finding the Fourth Proportional to 59,581.72, 89,236.46 and 28,438.84

Step by Step Solution

1. Step 1: Write the proportion equation
   59,581.72 : 89,236.46 = 28,438.84 : x
2. Step 2: Convert to fraction form
   59,581.72/89,236.46 = 28,438.84/x
3. Step 3: Cross multiply
   59,581.72x = 89,236.46 × 28,438.84
4. Step 4: Simplify right side
   59,581.72x = 2,537,781,256.11
5. Step 5: Solve for x
   x = 2,537,781,256.11/59,581.72
6. Step 6: Final answer
   x = 42,593.29