Finding the Fourth Proportional to 166,856.76, 230,259.24 and 91,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   166,856.76 : 230,259.24 = 91,404.72 : x
2. Step 2: Convert to fraction form
   166,856.76/230,259.24 = 91,404.72/x
3. Step 3: Cross multiply
   166,856.76x = 230,259.24 × 91,404.72
4. Step 4: Simplify right side
   166,856.76x = 21,046,781,359.61
5. Step 5: Solve for x
   x = 21,046,781,359.61/166,856.76
6. Step 6: Final answer
   x = 126,136.82