Finding the Fourth Proportional to 259,507.31, 358,130.72 and 163,979.15

Step by Step Solution

1. Step 1: Write the proportion equation
   259,507.31 : 358,130.72 = 163,979.15 : x
2. Step 2: Convert to fraction form
   259,507.31/358,130.72 = 163,979.15/x
3. Step 3: Cross multiply
   259,507.31x = 358,130.72 × 163,979.15
4. Step 4: Simplify right side
   259,507.31x = 58,725,971,054.49
5. Step 5: Solve for x
   x = 58,725,971,054.49/259,507.31
6. Step 6: Final answer
   x = 226,297.95