Finding the Fourth Proportional to 259,513, 358,128.42 and 140,281

Step by Step Solution

1. Step 1: Write the proportion equation
   259,513 : 358,128.42 = 140,281 : x
2. Step 2: Convert to fraction form
   259,513/358,128.42 = 140,281/x
3. Step 3: Cross multiply
   259,513x = 358,128.42 × 140,281
4. Step 4: Simplify right side
   259,513x = 50,238,612,886.02
5. Step 5: Solve for x
   x = 50,238,612,886.02/259,513
6. Step 6: Final answer
   x = 193,588.04