Finding the Fourth Proportional to 325,611.80, 488,061.30 and 115,141.40

Step by Step Solution

1. Step 1: Write the proportion equation
   325,611.80 : 488,061.30 = 115,141.40 : x
2. Step 2: Convert to fraction form
   325,611.80/488,061.30 = 115,141.40/x
3. Step 3: Cross multiply
   325,611.80x = 488,061.30 × 115,141.40
4. Step 4: Simplify right side
   325,611.80x = 56,196,061,367.82
5. Step 5: Solve for x
   x = 56,196,061,367.82/325,611.80
6. Step 6: Final answer
   x = 172,586.07