Finding the Fourth Proportional to 121,293.60, 167,382.72 and 67,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,293.60 : 167,382.72 = 67,578.72 : x
2. Step 2: Convert to fraction form
   121,293.60/167,382.72 = 67,578.72/x
3. Step 3: Cross multiply
   121,293.60x = 167,382.72 × 67,578.72
4. Step 4: Simplify right side
   121,293.60x = 11,311,509,967.72
5. Step 5: Solve for x
   x = 11,311,509,967.72/121,293.60
6. Step 6: Final answer
   x = 93,257.27