Finding the Fourth Proportional to 300,931.23, 451,114.28 and 101,111.88

Step by Step Solution

1. Step 1: Write the proportion equation
   300,931.23 : 451,114.28 = 101,111.88 : x
2. Step 2: Convert to fraction form
   300,931.23/451,114.28 = 101,111.88/x
3. Step 3: Cross multiply
   300,931.23x = 451,114.28 × 101,111.88
4. Step 4: Simplify right side
   300,931.23x = 45,613,014,510.94
5. Step 5: Solve for x
   x = 45,613,014,510.94/300,931.23
6. Step 6: Final answer
   x = 151,572.88