Finding the Fourth Proportional to 142,826.81, 214,268.23 and 52,870.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,826.81 : 214,268.23 = 52,870.31 : x
2. Step 2: Convert to fraction form
   142,826.81/214,268.23 = 52,870.31/x
3. Step 3: Cross multiply
   142,826.81x = 214,268.23 × 52,870.31
4. Step 4: Simplify right side
   142,826.81x = 11,328,426,738.00
5. Step 5: Solve for x
   x = 11,328,426,738.00/142,826.81
6. Step 6: Final answer
   x = 79,315.83