Finding the Fourth Proportional to 142,738.24, 214,142.88 and 42,900.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,738.24 : 214,142.88 = 42,900.04 : x
2. Step 2: Convert to fraction form
   142,738.24/214,142.88 = 42,900.04/x
3. Step 3: Cross multiply
   142,738.24x = 214,142.88 × 42,900.04
4. Step 4: Simplify right side
   142,738.24x = 9,186,738,117.72
5. Step 5: Solve for x
   x = 9,186,738,117.72/142,738.24
6. Step 6: Final answer
   x = 64,360.74