Finding the Fourth Proportional to 52,532.72, 72,436.28 and 42,942.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,532.72 : 72,436.28 = 42,942.80 : x
2. Step 2: Convert to fraction form
   52,532.72/72,436.28 = 42,942.80/x
3. Step 3: Cross multiply
   52,532.72x = 72,436.28 × 42,942.80
4. Step 4: Simplify right side
   52,532.72x = 3,110,616,684.78
5. Step 5: Solve for x
   x = 3,110,616,684.78/52,532.72
6. Step 6: Final answer
   x = 59,212.94