Finding the Fourth Proportional to 142,185.17, 213,218.21 and 57,888

Step by Step Solution

1. Step 1: Write the proportion equation
   142,185.17 : 213,218.21 = 57,888 : x
2. Step 2: Convert to fraction form
   142,185.17/213,218.21 = 57,888/x
3. Step 3: Cross multiply
   142,185.17x = 213,218.21 × 57,888
4. Step 4: Simplify right side
   142,185.17x = 12,342,775,451.04
5. Step 5: Solve for x
   x = 12,342,775,451.04/142,185.17
6. Step 6: Final answer
   x = 86,807.76