Finding the Fourth Proportional to 72,702.96, 109,009.79 and 28,277.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,702.96 : 109,009.79 = 28,277.94 : x
2. Step 2: Convert to fraction form
   72,702.96/109,009.79 = 28,277.94/x
3. Step 3: Cross multiply
   72,702.96x = 109,009.79 × 28,277.94
4. Step 4: Simplify right side
   72,702.96x = 3,082,572,301.03
5. Step 5: Solve for x
   x = 3,082,572,301.03/72,702.96
6. Step 6: Final answer
   x = 42,399.54