Finding the Fourth Proportional to 142,054.38, 212,931.76 and 47,259.17

Step by Step Solution

1. Step 1: Write the proportion equation
   142,054.38 : 212,931.76 = 47,259.17 : x
2. Step 2: Convert to fraction form
   142,054.38/212,931.76 = 47,259.17/x
3. Step 3: Cross multiply
   142,054.38x = 212,931.76 × 47,259.17
4. Step 4: Simplify right side
   142,054.38x = 10,062,978,244.24
5. Step 5: Solve for x
   x = 10,062,978,244.24/142,054.38
6. Step 6: Final answer
   x = 70,838.92