Finding the Fourth Proportional to 172,597.39, 238,061.71 and 115,207.78

Step by Step Solution

1. Step 1: Write the proportion equation
   172,597.39 : 238,061.71 = 115,207.78 : x
2. Step 2: Convert to fraction form
   172,597.39/238,061.71 = 115,207.78/x
3. Step 3: Cross multiply
   172,597.39x = 238,061.71 × 115,207.78
4. Step 4: Simplify right side
   172,597.39x = 27,426,561,112.10
5. Step 5: Solve for x
   x = 27,426,561,112.10/172,597.39
6. Step 6: Final answer
   x = 158,904.84