Finding the Fourth Proportional to 259,492.78, 358,100.10 and 146,315.56

Step by Step Solution

1. Step 1: Write the proportion equation
   259,492.78 : 358,100.10 = 146,315.56 : x
2. Step 2: Convert to fraction form
   259,492.78/358,100.10 = 146,315.56/x
3. Step 3: Cross multiply
   259,492.78x = 358,100.10 × 146,315.56
4. Step 4: Simplify right side
   259,492.78x = 52,395,616,667.56
5. Step 5: Solve for x
   x = 52,395,616,667.56/259,492.78
6. Step 6: Final answer
   x = 201,915.51