Finding the Fourth Proportional to 72,175.85, 99,615.54 and 43,500.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,175.85 : 99,615.54 = 43,500.63 : x
2. Step 2: Convert to fraction form
   72,175.85/99,615.54 = 43,500.63/x
3. Step 3: Cross multiply
   72,175.85x = 99,615.54 × 43,500.63
4. Step 4: Simplify right side
   72,175.85x = 4,333,339,039.78
5. Step 5: Solve for x
   x = 4,333,339,039.78/72,175.85
6. Step 6: Final answer
   x = 60,038.63