Finding the Fourth Proportional to 142,155.08, 213,173.67 and 57,858.03

Step by Step Solution

1. Step 1: Write the proportion equation
   142,155.08 : 213,173.67 = 57,858.03 : x
2. Step 2: Convert to fraction form
   142,155.08/213,173.67 = 57,858.03/x
3. Step 3: Cross multiply
   142,155.08x = 213,173.67 × 57,858.03
4. Step 4: Simplify right side
   142,155.08x = 12,333,808,811.04
5. Step 5: Solve for x
   x = 12,333,808,811.04/142,155.08
6. Step 6: Final answer
   x = 86,763.05