Finding the Fourth Proportional to 52,783.42, 72,838.41 and 28,905.48

Step by Step Solution

1. Step 1: Write the proportion equation
   52,783.42 : 72,838.41 = 28,905.48 : x
2. Step 2: Convert to fraction form
   52,783.42/72,838.41 = 28,905.48/x
3. Step 3: Cross multiply
   52,783.42x = 72,838.41 × 28,905.48
4. Step 4: Simplify right side
   52,783.42x = 2,105,429,203.49
5. Step 5: Solve for x
   x = 2,105,429,203.49/52,783.42
6. Step 6: Final answer
   x = 39,888.08