Finding the Fourth Proportional to 101,979.98, 140,752.52 and 65,162.66

Step by Step Solution

1. Step 1: Write the proportion equation
   101,979.98 : 140,752.52 = 65,162.66 : x
2. Step 2: Convert to fraction form
   101,979.98/140,752.52 = 65,162.66/x
3. Step 3: Cross multiply
   101,979.98x = 140,752.52 × 65,162.66
4. Step 4: Simplify right side
   101,979.98x = 9,171,808,604.90
5. Step 5: Solve for x
   x = 9,171,808,604.90/101,979.98
6. Step 6: Final answer
   x = 89,937.34