Finding the Fourth Proportional to 53,176.86, 73,383.13 and 28,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   53,176.86 : 73,383.13 = 28,978.04 : x
2. Step 2: Convert to fraction form
   53,176.86/73,383.13 = 28,978.04/x
3. Step 3: Cross multiply
   53,176.86x = 73,383.13 × 28,978.04
4. Step 4: Simplify right side
   53,176.86x = 2,126,499,112.29
5. Step 5: Solve for x
   x = 2,126,499,112.29/53,176.86
6. Step 6: Final answer
   x = 39,989.18