Finding the Fourth Proportional to 142,667.28, 214,036.50 and 42,829.32

Step by Step Solution

1. Step 1: Write the proportion equation
   142,667.28 : 214,036.50 = 42,829.32 : x
2. Step 2: Convert to fraction form
   142,667.28/214,036.50 = 42,829.32/x
3. Step 3: Cross multiply
   142,667.28x = 214,036.50 × 42,829.32
4. Step 4: Simplify right side
   142,667.28x = 9,167,037,750.18
5. Step 5: Solve for x
   x = 9,167,037,750.18/142,667.28
6. Step 6: Final answer
   x = 64,254.66