Finding the Fourth Proportional to 139,418.76, 209,010.54 and 60,473.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,418.76 : 209,010.54 = 60,473.52 : x
2. Step 2: Convert to fraction form
   139,418.76/209,010.54 = 60,473.52/x
3. Step 3: Cross multiply
   139,418.76x = 209,010.54 × 60,473.52
4. Step 4: Simplify right side
   139,418.76x = 12,639,603,070.90
5. Step 5: Solve for x
   x = 12,639,603,070.90/139,418.76
6. Step 6: Final answer
   x = 90,659.27