Finding the Fourth Proportional to 72,702.72, 109,009.41 and 28,277.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,702.72 : 109,009.41 = 28,277.69 : x
2. Step 2: Convert to fraction form
   72,702.72/109,009.41 = 28,277.69/x
3. Step 3: Cross multiply
   72,702.72x = 109,009.41 × 28,277.69
4. Step 4: Simplify right side
   72,702.72x = 3,082,533,758.02
5. Step 5: Solve for x
   x = 3,082,533,758.02/72,702.72
6. Step 6: Final answer
   x = 42,399.15