Finding the Fourth Proportional to 79,118.02, 118,725.50 and 31,728.10

Step by Step Solution

1. Step 1: Write the proportion equation
   79,118.02 : 118,725.50 = 31,728.10 : x
2. Step 2: Convert to fraction form
   79,118.02/118,725.50 = 31,728.10/x
3. Step 3: Cross multiply
   79,118.02x = 118,725.50 × 31,728.10
4. Step 4: Simplify right side
   79,118.02x = 3,766,934,536.55
5. Step 5: Solve for x
   x = 3,766,934,536.55/79,118.02
6. Step 6: Final answer
   x = 47,611.59