Finding the Fourth Proportional to 72,710.16, 109,064.41 and 28,368.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,710.16 : 109,064.41 = 28,368.06 : x
2. Step 2: Convert to fraction form
   72,710.16/109,064.41 = 28,368.06/x
3. Step 3: Cross multiply
   72,710.16x = 109,064.41 × 28,368.06
4. Step 4: Simplify right side
   72,710.16x = 3,093,945,406.40
5. Step 5: Solve for x
   x = 3,093,945,406.40/72,710.16
6. Step 6: Final answer
   x = 42,551.76