Finding the Fourth Proportional to 172,897.50, 238,598.55 and 93,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,897.50 : 238,598.55 = 93,409.50 : x
2. Step 2: Convert to fraction form
   172,897.50/238,598.55 = 93,409.50/x
3. Step 3: Cross multiply
   172,897.50x = 238,598.55 × 93,409.50
4. Step 4: Simplify right side
   172,897.50x = 22,287,371,256.23
5. Step 5: Solve for x
   x = 22,287,371,256.23/172,897.50
6. Step 6: Final answer
   x = 128,905.11