Finding the Fourth Proportional to 72,738.84, 109,059.93 and 28,369.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,738.84 : 109,059.93 = 28,369.74 : x
2. Step 2: Convert to fraction form
   72,738.84/109,059.93 = 28,369.74/x
3. Step 3: Cross multiply
   72,738.84x = 109,059.93 × 28,369.74
4. Step 4: Simplify right side
   72,738.84x = 3,094,001,858.52
5. Step 5: Solve for x
   x = 3,094,001,858.52/72,738.84
6. Step 6: Final answer
   x = 42,535.76