Finding the Fourth Proportional to 73,520.79, 110,221.78 and 28,518.91

Step by Step Solution

1. Step 1: Write the proportion equation
   73,520.79 : 110,221.78 = 28,518.91 : x
2. Step 2: Convert to fraction form
   73,520.79/110,221.78 = 28,518.91/x
3. Step 3: Cross multiply
   73,520.79x = 110,221.78 × 28,518.91
4. Step 4: Simplify right side
   73,520.79x = 3,143,404,677.01
5. Step 5: Solve for x
   x = 3,143,404,677.01/73,520.79
6. Step 6: Final answer
   x = 42,755.32