Finding the Fourth Proportional to 107,923.30, 161,820.15 and 55,435.30

Step by Step Solution

1. Step 1: Write the proportion equation
   107,923.30 : 161,820.15 = 55,435.30 : x
2. Step 2: Convert to fraction form
   107,923.30/161,820.15 = 55,435.30/x
3. Step 3: Cross multiply
   107,923.30x = 161,820.15 × 55,435.30
4. Step 4: Simplify right side
   107,923.30x = 8,970,548,561.30
5. Step 5: Solve for x
   x = 8,970,548,561.30/107,923.30
6. Step 6: Final answer
   x = 83,119.67