Finding the Fourth Proportional to 50,688.16, 76,045.20 and 21,096.16

Step by Step Solution

1. Step 1: Write the proportion equation
   50,688.16 : 76,045.20 = 21,096.16 : x
2. Step 2: Convert to fraction form
   50,688.16/76,045.20 = 21,096.16/x
3. Step 3: Cross multiply
   50,688.16x = 76,045.20 × 21,096.16
4. Step 4: Simplify right side
   50,688.16x = 1,604,261,706.43
5. Step 5: Solve for x
   x = 1,604,261,706.43/50,688.16
6. Step 6: Final answer
   x = 31,649.63