Finding the Fourth Proportional to 106,072.48, 146,343.59 and 65,771.74

Step by Step Solution

1. Step 1: Write the proportion equation
   106,072.48 : 146,343.59 = 65,771.74 : x
2. Step 2: Convert to fraction form
   106,072.48/146,343.59 = 65,771.74/x
3. Step 3: Cross multiply
   106,072.48x = 146,343.59 × 65,771.74
4. Step 4: Simplify right side
   106,072.48x = 9,625,271,820.43
5. Step 5: Solve for x
   x = 9,625,271,820.43/106,072.48
6. Step 6: Final answer
   x = 90,742.41