Finding the Fourth Proportional to 101,096.72, 139,485.48 and 65,288.24

Step by Step Solution

1. Step 1: Write the proportion equation
   101,096.72 : 139,485.48 = 65,288.24 : x
2. Step 2: Convert to fraction form
   101,096.72/139,485.48 = 65,288.24/x
3. Step 3: Cross multiply
   101,096.72x = 139,485.48 × 65,288.24
4. Step 4: Simplify right side
   101,096.72x = 9,106,761,494.76
5. Step 5: Solve for x
   x = 9,106,761,494.76/101,096.72
6. Step 6: Final answer
   x = 90,079.69