Finding the Fourth Proportional to 101,798.72, 140,453.52 and 65,990.24

Step by Step Solution

1. Step 1: Write the proportion equation
   101,798.72 : 140,453.52 = 65,990.24 : x
2. Step 2: Convert to fraction form
   101,798.72/140,453.52 = 65,990.24/x
3. Step 3: Cross multiply
   101,798.72x = 140,453.52 × 65,990.24
4. Step 4: Simplify right side
   101,798.72x = 9,268,561,493.64
5. Step 5: Solve for x
   x = 9,268,561,493.64/101,798.72
6. Step 6: Final answer
   x = 91,047.92