Finding the Fourth Proportional to 181,978.76, 272,970.58 and 76,871.54

Step by Step Solution

1. Step 1: Write the proportion equation
   181,978.76 : 272,970.58 = 76,871.54 : x
2. Step 2: Convert to fraction form
   181,978.76/272,970.58 = 76,871.54/x
3. Step 3: Cross multiply
   181,978.76x = 272,970.58 × 76,871.54
4. Step 4: Simplify right side
   181,978.76x = 20,983,668,859.29
5. Step 5: Solve for x
   x = 20,983,668,859.29/181,978.76
6. Step 6: Final answer
   x = 115,308.34