Finding the Fourth Proportional to 142,718.25, 214,069.14 and 42,876.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,718.25 : 214,069.14 = 42,876.30 : x
2. Step 2: Convert to fraction form
   142,718.25/214,069.14 = 42,876.30/x
3. Step 3: Cross multiply
   142,718.25x = 214,069.14 × 42,876.30
4. Step 4: Simplify right side
   142,718.25x = 9,178,492,667.38
5. Step 5: Solve for x
   x = 9,178,492,667.38/142,718.25
6. Step 6: Final answer
   x = 64,311.98