Finding the Fourth Proportional to 52,833.63, 72,910.07 and 28,961.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,833.63 : 72,910.07 = 28,961.31 : x
2. Step 2: Convert to fraction form
   52,833.63/72,910.07 = 28,961.31/x
3. Step 3: Cross multiply
   52,833.63x = 72,910.07 × 28,961.31
4. Step 4: Simplify right side
   52,833.63x = 2,111,570,994.59
5. Step 5: Solve for x
   x = 2,111,570,994.59/52,833.63
6. Step 6: Final answer
   x = 39,966.42