Finding the Fourth Proportional to 82,938, 114,454.47 and 47,128.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82,938 : 114,454.47 = 47,128.05 : x
2. Step 2: Convert to fraction form
   82,938/114,454.47 = 47,128.05/x
3. Step 3: Cross multiply
   82,938x = 114,454.47 × 47,128.05
4. Step 4: Simplify right side
   82,938x = 5,394,015,984.88
5. Step 5: Solve for x
   x = 5,394,015,984.88/82,938
6. Step 6: Final answer
   x = 65,036.73