Finding the Fourth Proportional to 139,460.08, 209,072.58 and 60,514.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,460.08 : 209,072.58 = 60,514.96 : x
2. Step 2: Convert to fraction form
   139,460.08/209,072.58 = 60,514.96/x
3. Step 3: Cross multiply
   139,460.08x = 209,072.58 × 60,514.96
4. Step 4: Simplify right side
   139,460.08x = 12,652,018,815.80
5. Step 5: Solve for x
   x = 12,652,018,815.80/139,460.08
6. Step 6: Final answer
   x = 90,721.44