Finding the Fourth Proportional to 106,499.20, 146,903.76 and 68,245.86

Step by Step Solution

1. Step 1: Write the proportion equation
   106,499.20 : 146,903.76 = 68,245.86 : x
2. Step 2: Convert to fraction form
   106,499.20/146,903.76 = 68,245.86/x
3. Step 3: Cross multiply
   106,499.20x = 146,903.76 × 68,245.86
4. Step 4: Simplify right side
   106,499.20x = 10,025,573,438.43
5. Step 5: Solve for x
   x = 10,025,573,438.43/106,499.20
6. Step 6: Final answer
   x = 94,137.55