Finding the Fourth Proportional to 139,982.88, 193,115.64 and 88,968.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,982.88 : 193,115.64 = 88,968.32 : x
2. Step 2: Convert to fraction form
   139,982.88/193,115.64 = 88,968.32/x
3. Step 3: Cross multiply
   139,982.88x = 193,115.64 × 88,968.32
4. Step 4: Simplify right side
   139,982.88x = 17,181,174,056.52
5. Step 5: Solve for x
   x = 17,181,174,056.52/139,982.88
6. Step 6: Final answer
   x = 122,737.68