Finding the Fourth Proportional to 105,122.22, 157,729.52 and 55,190.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,122.22 : 157,729.52 = 55,190.71 : x
2. Step 2: Convert to fraction form
   105,122.22/157,729.52 = 55,190.71/x
3. Step 3: Cross multiply
   105,122.22x = 157,729.52 × 55,190.71
4. Step 4: Simplify right side
   105,122.22x = 8,705,204,196.76
5. Step 5: Solve for x
   x = 8,705,204,196.76/105,122.22
6. Step 6: Final answer
   x = 82,810.32