Finding the Fourth Proportional to 142,585.05, 213,797.93 and 58,403.91

Step by Step Solution

1. Step 1: Write the proportion equation
   142,585.05 : 213,797.93 = 58,403.91 : x
2. Step 2: Convert to fraction form
   142,585.05/213,797.93 = 58,403.91/x
3. Step 3: Cross multiply
   142,585.05x = 213,797.93 × 58,403.91
4. Step 4: Simplify right side
   142,585.05x = 12,486,634,769.89
5. Step 5: Solve for x
   x = 12,486,634,769.89/142,585.05
6. Step 6: Final answer
   x = 87,573.24