Finding the Fourth Proportional to 139,980.88, 193,112.88 and 88,966.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,980.88 : 193,112.88 = 88,966.32 : x
2. Step 2: Convert to fraction form
   139,980.88/193,112.88 = 88,966.32/x
3. Step 3: Cross multiply
   139,980.88x = 193,112.88 × 88,966.32
4. Step 4: Simplify right side
   139,980.88x = 17,180,542,278.20
5. Step 5: Solve for x
   x = 17,180,542,278.20/139,980.88
6. Step 6: Final answer
   x = 122,734.92