Finding the Fourth Proportional to 112,978.24, 155,914.85 and 67,647.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,978.24 : 155,914.85 = 67,647.57 : x
2. Step 2: Convert to fraction form
   112,978.24/155,914.85 = 67,647.57/x
3. Step 3: Cross multiply
   112,978.24x = 155,914.85 × 67,647.57
4. Step 4: Simplify right side
   112,978.24x = 10,547,260,123.59
5. Step 5: Solve for x
   x = 10,547,260,123.59/112,978.24
6. Step 6: Final answer
   x = 93,356.56