Finding the Fourth Proportional to 82,419.05, 113,689.55 and 52,611.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82,419.05 : 113,689.55 = 52,611.05 : x
2. Step 2: Convert to fraction form
   82,419.05/113,689.55 = 52,611.05/x
3. Step 3: Cross multiply
   82,419.05x = 113,689.55 × 52,611.05
4. Step 4: Simplify right side
   82,419.05x = 5,981,326,162.61
5. Step 5: Solve for x
   x = 5,981,326,162.61/82,419.05
6. Step 6: Final answer
   x = 72,572.14