Finding the Fourth Proportional to 106,385.40, 146,808.72 and 68,659.92

Step by Step Solution

1. Step 1: Write the proportion equation
   106,385.40 : 146,808.72 = 68,659.92 : x
2. Step 2: Convert to fraction form
   106,385.40/146,808.72 = 68,659.92/x
3. Step 3: Cross multiply
   106,385.40x = 146,808.72 × 68,659.92
4. Step 4: Simplify right side
   106,385.40x = 10,079,874,970.50
5. Step 5: Solve for x
   x = 10,079,874,970.50/106,385.40
6. Step 6: Final answer
   x = 94,748.67