Finding the Fourth Proportional to 72,699.84, 109,005.10 and 28,274.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,699.84 : 109,005.10 = 28,274.81 : x
2. Step 2: Convert to fraction form
   72,699.84/109,005.10 = 28,274.81/x
3. Step 3: Cross multiply
   72,699.84x = 109,005.10 × 28,274.81
4. Step 4: Simplify right side
   72,699.84x = 3,082,098,491.53
5. Step 5: Solve for x
   x = 3,082,098,491.53/72,699.84
6. Step 6: Final answer
   x = 42,394.85