Finding the Fourth Proportional to 52,530.72, 72,433.52 and 42,940.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,530.72 : 72,433.52 = 42,940.80 : x
2. Step 2: Convert to fraction form
   52,530.72/72,433.52 = 42,940.80/x
3. Step 3: Cross multiply
   52,530.72x = 72,433.52 × 42,940.80
4. Step 4: Simplify right side
   52,530.72x = 3,110,353,295.62
5. Step 5: Solve for x
   x = 3,110,353,295.62/52,530.72
6. Step 6: Final answer
   x = 59,210.18