Finding the Fourth Proportional to 105,094.20, 157,787.10 and 65,728.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,094.20 : 157,787.10 = 65,728.20 : x
2. Step 2: Convert to fraction form
   105,094.20/157,787.10 = 65,728.20/x
3. Step 3: Cross multiply
   105,094.20x = 157,787.10 × 65,728.20
4. Step 4: Simplify right side
   105,094.20x = 10,371,062,066.22
5. Step 5: Solve for x
   x = 10,371,062,066.22/105,094.20
6. Step 6: Final answer
   x = 98,683.49