Finding the Fourth Proportional to 101,090.72, 139,477.20 and 65,282.24

Step by Step Solution

1. Step 1: Write the proportion equation
   101,090.72 : 139,477.20 = 65,282.24 : x
2. Step 2: Convert to fraction form
   101,090.72/139,477.20 = 65,282.24/x
3. Step 3: Cross multiply
   101,090.72x = 139,477.20 × 65,282.24
4. Step 4: Simplify right side
   101,090.72x = 9,105,384,044.93
5. Step 5: Solve for x
   x = 9,105,384,044.93/101,090.72
6. Step 6: Final answer
   x = 90,071.41