Finding the Fourth Proportional to 103,601.28, 155,384.72 and 28,729.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,601.28 : 155,384.72 = 28,729.12 : x
2. Step 2: Convert to fraction form
   103,601.28/155,384.72 = 28,729.12/x
3. Step 3: Cross multiply
   103,601.28x = 155,384.72 × 28,729.12
4. Step 4: Simplify right side
   103,601.28x = 4,464,066,267.05
5. Step 5: Solve for x
   x = 4,464,066,267.05/103,601.28
6. Step 6: Final answer
   x = 43,088.91