Finding the Fourth Proportional to 78,434.38, 108,184.72 and 51,568.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,434.38 : 108,184.72 = 51,568.30 : x
2. Step 2: Convert to fraction form
   78,434.38/108,184.72 = 51,568.30/x
3. Step 3: Cross multiply
   78,434.38x = 108,184.72 × 51,568.30
4. Step 4: Simplify right side
   78,434.38x = 5,578,902,096.38
5. Step 5: Solve for x
   x = 5,578,902,096.38/78,434.38
6. Step 6: Final answer
   x = 71,128.27