Finding the Fourth Proportional to 89,278.04, 123,156.78 and 68,020.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,278.04 : 123,156.78 = 68,020.40 : x
2. Step 2: Convert to fraction form
   89,278.04/123,156.78 = 68,020.40/x
3. Step 3: Cross multiply
   89,278.04x = 123,156.78 × 68,020.40
4. Step 4: Simplify right side
   89,278.04x = 8,377,173,438.31
5. Step 5: Solve for x
   x = 8,377,173,438.31/89,278.04
6. Step 6: Final answer
   x = 93,832.41