Finding the Fourth Proportional to 102,403, 153,630.42 and 28,531

Step by Step Solution

1. Step 1: Write the proportion equation
   102,403 : 153,630.42 = 28,531 : x
2. Step 2: Convert to fraction form
   102,403/153,630.42 = 28,531/x
3. Step 3: Cross multiply
   102,403x = 153,630.42 × 28,531
4. Step 4: Simplify right side
   102,403x = 4,383,229,513.02
5. Step 5: Solve for x
   x = 4,383,229,513.02/102,403
6. Step 6: Final answer
   x = 42,803.72