Finding the Fourth Proportional to 115,500.78, 159,393.69 and 67,788.54

Step by Step Solution

1. Step 1: Write the proportion equation
   115,500.78 : 159,393.69 = 67,788.54 : x
2. Step 2: Convert to fraction form
   115,500.78/159,393.69 = 67,788.54/x
3. Step 3: Cross multiply
   115,500.78x = 159,393.69 × 67,788.54
4. Step 4: Simplify right side
   115,500.78x = 10,805,065,530.31
5. Step 5: Solve for x
   x = 10,805,065,530.31/115,500.78
6. Step 6: Final answer
   x = 93,549.72