Finding the Fourth Proportional to 103,429.73, 155,141.51 and 28,554.45

Step by Step Solution

1. Step 1: Write the proportion equation
   103,429.73 : 155,141.51 = 28,554.45 : x
2. Step 2: Convert to fraction form
   103,429.73/155,141.51 = 28,554.45/x
3. Step 3: Cross multiply
   103,429.73x = 155,141.51 × 28,554.45
4. Step 4: Simplify right side
   103,429.73x = 4,429,980,490.22
5. Step 5: Solve for x
   x = 4,429,980,490.22/103,429.73
6. Step 6: Final answer
   x = 42,830.82