Finding the Fourth Proportional to 105,050.72, 157,622.28 and 55,119.04

Step by Step Solution

1. Step 1: Write the proportion equation
   105,050.72 : 157,622.28 = 55,119.04 : x
2. Step 2: Convert to fraction form
   105,050.72/157,622.28 = 55,119.04/x
3. Step 3: Cross multiply
   105,050.72x = 157,622.28 × 55,119.04
4. Step 4: Simplify right side
   105,050.72x = 8,687,988,756.21
5. Step 5: Solve for x
   x = 8,687,988,756.21/105,050.72
6. Step 6: Final answer
   x = 82,702.80