Finding the Fourth Proportional to 79,308.84, 118,948.06 and 39,855.40

Step by Step Solution

1. Step 1: Write the proportion equation
   79,308.84 : 118,948.06 = 39,855.40 : x
2. Step 2: Convert to fraction form
   79,308.84/118,948.06 = 39,855.40/x
3. Step 3: Cross multiply
   79,308.84x = 118,948.06 × 39,855.40
4. Step 4: Simplify right side
   79,308.84x = 4,740,722,510.52
5. Step 5: Solve for x
   x = 4,740,722,510.52/79,308.84
6. Step 6: Final answer
   x = 59,775.46