Finding the Fourth Proportional to 172,347, 258,762.71 and 88,167.55

Step by Step Solution

1. Step 1: Write the proportion equation
   172,347 : 258,762.71 = 88,167.55 : x
2. Step 2: Convert to fraction form
   172,347/258,762.71 = 88,167.55/x
3. Step 3: Cross multiply
   172,347x = 258,762.71 × 88,167.55
4. Step 4: Simplify right side
   172,347x = 22,814,474,172.06
5. Step 5: Solve for x
   x = 22,814,474,172.06/172,347
6. Step 6: Final answer
   x = 132,375.23