Finding the Fourth Proportional to 107,620.71, 161,290.68 and 67,077.48

Step by Step Solution

1. Step 1: Write the proportion equation
   107,620.71 : 161,290.68 = 67,077.48 : x
2. Step 2: Convert to fraction form
   107,620.71/161,290.68 = 67,077.48/x
3. Step 3: Cross multiply
   107,620.71x = 161,290.68 × 67,077.48
4. Step 4: Simplify right side
   107,620.71x = 10,818,972,361.89
5. Step 5: Solve for x
   x = 10,818,972,361.89/107,620.71
6. Step 6: Final answer
   x = 100,528.72