Finding the Fourth Proportional to 82,691.48, 123,938.78 and 47,557.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82,691.48 : 123,938.78 = 47,557.32 : x
2. Step 2: Convert to fraction form
   82,691.48/123,938.78 = 47,557.32/x
3. Step 3: Cross multiply
   82,691.48x = 123,938.78 × 47,557.32
4. Step 4: Simplify right side
   82,691.48x = 5,894,195,983.08
5. Step 5: Solve for x
   x = 5,894,195,983.08/82,691.48
6. Step 6: Final answer
   x = 71,279.37