Finding the Fourth Proportional to 102,510.52, 153,791.68 and 28,638.52

Step by Step Solution

1. Step 1: Write the proportion equation
   102,510.52 : 153,791.68 = 28,638.52 : x
2. Step 2: Convert to fraction form
   102,510.52/153,791.68 = 28,638.52/x
3. Step 3: Cross multiply
   102,510.52x = 153,791.68 × 28,638.52
4. Step 4: Simplify right side
   102,510.52x = 4,404,366,103.51
5. Step 5: Solve for x
   x = 4,404,366,103.51/102,510.52
6. Step 6: Final answer
   x = 42,965.02