Finding the Fourth Proportional to 79,146.18, 118,708.27 and 19,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   79,146.18 : 118,708.27 = 19,978.25 : x
2. Step 2: Convert to fraction form
   79,146.18/118,708.27 = 19,978.25/x
3. Step 3: Cross multiply
   79,146.18x = 118,708.27 × 19,978.25
4. Step 4: Simplify right side
   79,146.18x = 2,371,582,851.64
5. Step 5: Solve for x
   x = 2,371,582,851.64/79,146.18
6. Step 6: Final answer
   x = 29,964.59