Finding the Fourth Proportional to 172,597.50, 238,061.85 and 115,207.89

Step by Step Solution

1. Step 1: Write the proportion equation
   172,597.50 : 238,061.85 = 115,207.89 : x
2. Step 2: Convert to fraction form
   172,597.50/238,061.85 = 115,207.89/x
3. Step 3: Cross multiply
   172,597.50x = 238,061.85 × 115,207.89
4. Step 4: Simplify right side
   172,597.50x = 27,426,603,428.00
5. Step 5: Solve for x
   x = 27,426,603,428.00/172,597.50
6. Step 6: Final answer
   x = 158,904.99