Finding the Fourth Proportional to 139,968.06, 209,764.17 and 76,693.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968.06 : 209,764.17 = 76,693.02 : x
2. Step 2: Convert to fraction form
   139,968.06/209,764.17 = 76,693.02/x
3. Step 3: Cross multiply
   139,968.06x = 209,764.17 × 76,693.02
4. Step 4: Simplify right side
   139,968.06x = 16,087,447,685.09
5. Step 5: Solve for x
   x = 16,087,447,685.09/139,968.06
6. Step 6: Final answer
   x = 114,936.56