Finding the Fourth Proportional to 142,723.10, 214,117.05 and 83,528.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,723.10 : 214,117.05 = 83,528.30 : x
2. Step 2: Convert to fraction form
   142,723.10/214,117.05 = 83,528.30/x
3. Step 3: Cross multiply
   142,723.10x = 214,117.05 × 83,528.30
4. Step 4: Simplify right side
   142,723.10x = 17,884,833,187.52
5. Step 5: Solve for x
   x = 17,884,833,187.52/142,723.10
6. Step 6: Final answer
   x = 125,311.41