Finding the Fourth Proportional to 59,619.59, 89,423.91 and 20,172.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59,619.59 : 89,423.91 = 20,172.18 : x
2. Step 2: Convert to fraction form
   59,619.59/89,423.91 = 20,172.18/x
3. Step 3: Cross multiply
   59,619.59x = 89,423.91 × 20,172.18
4. Step 4: Simplify right side
   59,619.59x = 1,803,875,208.82
5. Step 5: Solve for x
   x = 1,803,875,208.82/59,619.59
6. Step 6: Final answer
   x = 30,256.42