Finding the Fourth Proportional to 52,800.15, 79,152.85 and 39,456.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,800.15 : 79,152.85 = 39,456.72 : x
2. Step 2: Convert to fraction form
   52,800.15/79,152.85 = 39,456.72/x
3. Step 3: Cross multiply
   52,800.15x = 79,152.85 × 39,456.72
4. Step 4: Simplify right side
   52,800.15x = 3,123,111,667.03
5. Step 5: Solve for x
   x = 3,123,111,667.03/52,800.15
6. Step 6: Final answer
   x = 59,149.67