Finding the Fourth Proportional to 105,977.67, 146,213.02 and 65,676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,977.67 : 146,213.02 = 65,676.72 : x
2. Step 2: Convert to fraction form
   105,977.67/146,213.02 = 65,676.72/x
3. Step 3: Cross multiply
   105,977.67x = 146,213.02 × 65,676.72
4. Step 4: Simplify right side
   105,977.67x = 9,602,791,835.86
5. Step 5: Solve for x
   x = 9,602,791,835.86/105,977.67
6. Step 6: Final answer
   x = 90,611.47