Finding the Fourth Proportional to 180,144, 248,598.72 and 100,656

Step by Step Solution

1. Step 1: Write the proportion equation
   180,144 : 248,598.72 = 100,656 : x
2. Step 2: Convert to fraction form
   180,144/248,598.72 = 100,656/x
3. Step 3: Cross multiply
   180,144x = 248,598.72 × 100,656
4. Step 4: Simplify right side
   180,144x = 25,022,952,760.32
5. Step 5: Solve for x
   x = 25,022,952,760.32/180,144
6. Step 6: Final answer
   x = 138,905.28