Finding the Fourth Proportional to 172,978.37, 238,710.05 and 93,490.37

Step by Step Solution

1. Step 1: Write the proportion equation
   172,978.37 : 238,710.05 = 93,490.37 : x
2. Step 2: Convert to fraction form
   172,978.37/238,710.05 = 93,490.37/x
3. Step 3: Cross multiply
   172,978.37x = 238,710.05 × 93,490.37
4. Step 4: Simplify right side
   172,978.37x = 22,317,090,429.77
5. Step 5: Solve for x
   x = 22,317,090,429.77/172,978.37
6. Step 6: Final answer
   x = 129,016.65