Finding the Fourth Proportional to 82,547.73, 123,821.58 and 78,340.49

Step by Step Solution

1. Step 1: Write the proportion equation
   82,547.73 : 123,821.58 = 78,340.49 : x
2. Step 2: Convert to fraction form
   82,547.73/123,821.58 = 78,340.49/x
3. Step 3: Cross multiply
   82,547.73x = 123,821.58 × 78,340.49
4. Step 4: Simplify right side
   82,547.73x = 9,700,242,630.67
5. Step 5: Solve for x
   x = 9,700,242,630.67/82,547.73
6. Step 6: Final answer
   x = 117,510.71