Finding the Fourth Proportional to 212,477.48, 318,728.71 and 60,662.88

Step by Step Solution

1. Step 1: Write the proportion equation
   212,477.48 : 318,728.71 = 60,662.88 : x
2. Step 2: Convert to fraction form
   212,477.48/318,728.71 = 60,662.88/x
3. Step 3: Cross multiply
   212,477.48x = 318,728.71 × 60,662.88
4. Step 4: Simplify right side
   212,477.48x = 19,335,002,530.86
5. Step 5: Solve for x
   x = 19,335,002,530.86/212,477.48
6. Step 6: Final answer
   x = 90,997.89