Finding the Fourth Proportional to 139,460.89, 209,108.18 and 55,233.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,460.89 : 209,108.18 = 55,233.14 : x
2. Step 2: Convert to fraction form
   139,460.89/209,108.18 = 55,233.14/x
3. Step 3: Cross multiply
   139,460.89x = 209,108.18 × 55,233.14
4. Step 4: Simplify right side
   139,460.89x = 11,549,701,649.86
5. Step 5: Solve for x
   x = 11,549,701,649.86/139,460.89
6. Step 6: Final answer
   x = 82,816.78