Finding the Fourth Proportional to 100,764.72, 151,139.16 and 30,643.92

Step by Step Solution

1. Step 1: Write the proportion equation
   100,764.72 : 151,139.16 = 30,643.92 : x
2. Step 2: Convert to fraction form
   100,764.72/151,139.16 = 30,643.92/x
3. Step 3: Cross multiply
   100,764.72x = 151,139.16 × 30,643.92
4. Step 4: Simplify right side
   100,764.72x = 4,631,496,327.91
5. Step 5: Solve for x
   x = 4,631,496,327.91/100,764.72
6. Step 6: Final answer
   x = 45,963.47