Finding the Fourth Proportional to 101,508.72, 140,145.56 and 65,224.79

Step by Step Solution

1. Step 1: Write the proportion equation
   101,508.72 : 140,145.56 = 65,224.79 : x
2. Step 2: Convert to fraction form
   101,508.72/140,145.56 = 65,224.79/x
3. Step 3: Cross multiply
   101,508.72x = 140,145.56 × 65,224.79
4. Step 4: Simplify right side
   101,508.72x = 9,140,963,693.58
5. Step 5: Solve for x
   x = 9,140,963,693.58/101,508.72
6. Step 6: Final answer
   x = 90,051.02