Finding the Fourth Proportional to 78,753.98, 118,096.31 and 28,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,753.98 : 118,096.31 = 28,821.10 : x
2. Step 2: Convert to fraction form
   78,753.98/118,096.31 = 28,821.10/x
3. Step 3: Cross multiply
   78,753.98x = 118,096.31 × 28,821.10
4. Step 4: Simplify right side
   78,753.98x = 3,403,665,560.14
5. Step 5: Solve for x
   x = 3,403,665,560.14/78,753.98
6. Step 6: Final answer
   x = 43,218.97