Finding the Fourth Proportional to 52,643.94, 72,648.66 and 28,770.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,643.94 : 72,648.66 = 28,770.61 : x
2. Step 2: Convert to fraction form
   52,643.94/72,648.66 = 28,770.61/x
3. Step 3: Cross multiply
   52,643.94x = 72,648.66 × 28,770.61
4. Step 4: Simplify right side
   52,643.94x = 2,090,146,263.88
5. Step 5: Solve for x
   x = 2,090,146,263.88/52,643.94
6. Step 6: Final answer
   x = 39,703.45