Finding the Fourth Proportional to 51,301.38, 76,978.72 and 38,817.70

Step by Step Solution

1. Step 1: Write the proportion equation
   51,301.38 : 76,978.72 = 38,817.70 : x
2. Step 2: Convert to fraction form
   51,301.38/76,978.72 = 38,817.70/x
3. Step 3: Cross multiply
   51,301.38x = 76,978.72 × 38,817.70
4. Step 4: Simplify right side
   51,301.38x = 2,988,136,715.42
5. Step 5: Solve for x
   x = 2,988,136,715.42/51,301.38
6. Step 6: Final answer
   x = 58,246.71