Finding the Fourth Proportional to 103,436.73, 155,152.01 and 28,561.45

Step by Step Solution

1. Step 1: Write the proportion equation
   103,436.73 : 155,152.01 = 28,561.45 : x
2. Step 2: Convert to fraction form
   103,436.73/155,152.01 = 28,561.45/x
3. Step 3: Cross multiply
   103,436.73x = 155,152.01 × 28,561.45
4. Step 4: Simplify right side
   103,436.73x = 4,431,366,376.01
5. Step 5: Solve for x
   x = 4,431,366,376.01/103,436.73
6. Step 6: Final answer
   x = 42,841.32