Finding the Fourth Proportional to 105,164.85, 157,578.78 and 55,242.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,164.85 : 157,578.78 = 55,242.93 : x
2. Step 2: Convert to fraction form
   105,164.85/157,578.78 = 55,242.93/x
3. Step 3: Cross multiply
   105,164.85x = 157,578.78 × 55,242.93
4. Step 4: Simplify right side
   105,164.85x = 8,705,113,513.03
5. Step 5: Solve for x
   x = 8,705,113,513.03/105,164.85
6. Step 6: Final answer
   x = 82,775.88