Finding the Fourth Proportional to 52,879.50, 72,976.59 and 30,530.70

Step by Step Solution

1. Step 1: Write the proportion equation
   52,879.50 : 72,976.59 = 30,530.70 : x
2. Step 2: Convert to fraction form
   52,879.50/72,976.59 = 30,530.70/x
3. Step 3: Cross multiply
   52,879.50x = 72,976.59 × 30,530.70
4. Step 4: Simplify right side
   52,879.50x = 2,228,026,376.31
5. Step 5: Solve for x
   x = 2,228,026,376.31/52,879.50
6. Step 6: Final answer
   x = 42,134.03