Finding the Fourth Proportional to 256,123.42, 353,496.59 and 152,764.24

Step by Step Solution

1. Step 1: Write the proportion equation
   256,123.42 : 353,496.59 = 152,764.24 : x
2. Step 2: Convert to fraction form
   256,123.42/353,496.59 = 152,764.24/x
3. Step 3: Cross multiply
   256,123.42x = 353,496.59 × 152,764.24
4. Step 4: Simplify right side
   256,123.42x = 54,001,637,913.94
5. Step 5: Solve for x
   x = 54,001,637,913.94/256,123.42
6. Step 6: Final answer
   x = 210,842.25