Finding the Fourth Proportional to 171,196.50, 256,911.39 and 60,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,196.50 : 256,911.39 = 60,388.50 : x
2. Step 2: Convert to fraction form
   171,196.50/256,911.39 = 60,388.50/x
3. Step 3: Cross multiply
   171,196.50x = 256,911.39 × 60,388.50
4. Step 4: Simplify right side
   171,196.50x = 15,514,493,475.02
5. Step 5: Solve for x
   x = 15,514,493,475.02/171,196.50
6. Step 6: Final answer
   x = 90,623.89