Finding the Fourth Proportional to 139,505.76, 209,350.08 and 83,304

Step by Step Solution

1. Step 1: Write the proportion equation
   139,505.76 : 209,350.08 = 83,304 : x
2. Step 2: Convert to fraction form
   139,505.76/209,350.08 = 83,304/x
3. Step 3: Cross multiply
   139,505.76x = 209,350.08 × 83,304
4. Step 4: Simplify right side
   139,505.76x = 17,439,699,064.32
5. Step 5: Solve for x
   x = 17,439,699,064.32/139,505.76
6. Step 6: Final answer
   x = 125,010.60