Finding the Fourth Proportional to 206,578.50, 309,919.59 and 58,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   206,578.50 : 309,919.59 = 58,834.50 : x
2. Step 2: Convert to fraction form
   206,578.50/309,919.59 = 58,834.50/x
3. Step 3: Cross multiply
   206,578.50x = 309,919.59 × 58,834.50
4. Step 4: Simplify right side
   206,578.50x = 18,233,964,117.86
5. Step 5: Solve for x
   x = 18,233,964,117.86/206,578.50
6. Step 6: Final answer
   x = 88,266.51