Finding the Fourth Proportional to 256,499.99, 354,196.95 and 159,868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   256,499.99 : 354,196.95 = 159,868.76 : x
2. Step 2: Convert to fraction form
   256,499.99/354,196.95 = 159,868.76/x
3. Step 3: Cross multiply
   256,499.99x = 354,196.95 × 159,868.76
4. Step 4: Simplify right side
   256,499.99x = 56,625,028,077.77
5. Step 5: Solve for x
   x = 56,625,028,077.77/256,499.99
6. Step 6: Final answer
   x = 220,760.36