Finding the Fourth Proportional to 256,123.19, 353,450.53 and 141,402.06

Step by Step Solution

1. Step 1: Write the proportion equation
   256,123.19 : 353,450.53 = 141,402.06 : x
2. Step 2: Convert to fraction form
   256,123.19/353,450.53 = 141,402.06/x
3. Step 3: Cross multiply
   256,123.19x = 353,450.53 × 141,402.06
4. Step 4: Simplify right side
   256,123.19x = 49,978,632,696.59
5. Step 5: Solve for x
   x = 49,978,632,696.59/256,123.19
6. Step 6: Final answer
   x = 195,135.13