Finding the Fourth Proportional to 142,585.20, 213,834.58 and 59,459.76

Step by Step Solution

1. Step 1: Write the proportion equation
   142,585.20 : 213,834.58 = 59,459.76 : x
2. Step 2: Convert to fraction form
   142,585.20/213,834.58 = 59,459.76/x
3. Step 3: Cross multiply
   142,585.20x = 213,834.58 × 59,459.76
4. Step 4: Simplify right side
   142,585.20x = 12,714,552,806.50
5. Step 5: Solve for x
   x = 12,714,552,806.50/142,585.20
6. Step 6: Final answer
   x = 89,171.62