Finding the Fourth Proportional to 154,749.72, 213,647.76 and 101,124.48

Step by Step Solution

1. Step 1: Write the proportion equation
   154,749.72 : 213,647.76 = 101,124.48 : x
2. Step 2: Convert to fraction form
   154,749.72/213,647.76 = 101,124.48/x
3. Step 3: Cross multiply
   154,749.72x = 213,647.76 × 101,124.48
4. Step 4: Simplify right side
   154,749.72x = 21,605,018,633.16
5. Step 5: Solve for x
   x = 21,605,018,633.16/154,749.72
6. Step 6: Final answer
   x = 139,612.65