Finding the Fourth Proportional to 172,938.50, 238,658.78 and 97,487

Step by Step Solution

1. Step 1: Write the proportion equation
   172,938.50 : 238,658.78 = 97,487 : x
2. Step 2: Convert to fraction form
   172,938.50/238,658.78 = 97,487/x
3. Step 3: Cross multiply
   172,938.50x = 238,658.78 × 97,487
4. Step 4: Simplify right side
   172,938.50x = 23,266,128,485.86
5. Step 5: Solve for x
   x = 23,266,128,485.86/172,938.50
6. Step 6: Final answer
   x = 134,534.12