Finding the Fourth Proportional to 106,031.42, 146,373.46 and 67,288.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,031.42 : 146,373.46 = 67,288.72 : x
2. Step 2: Convert to fraction form
   106,031.42/146,373.46 = 67,288.72/x
3. Step 3: Cross multiply
   106,031.42x = 146,373.46 × 67,288.72
4. Step 4: Simplify right side
   106,031.42x = 9,849,282,765.37
5. Step 5: Solve for x
   x = 9,849,282,765.37/106,031.42
6. Step 6: Final answer
   x = 92,890.23