Finding the Fourth Proportional to 147,392.61, 221,185.71 and 80,879.46

Step by Step Solution

1. Step 1: Write the proportion equation
   147,392.61 : 221,185.71 = 80,879.46 : x
2. Step 2: Convert to fraction form
   147,392.61/221,185.71 = 80,879.46/x
3. Step 3: Cross multiply
   147,392.61x = 221,185.71 × 80,879.46
4. Step 4: Simplify right side
   147,392.61x = 17,889,380,784.52
5. Step 5: Solve for x
   x = 17,889,380,784.52/147,392.61
6. Step 6: Final answer
   x = 121,372.30