Finding the Fourth Proportional to 151,728.36, 209,456 and 88,053.86

Step by Step Solution

1. Step 1: Write the proportion equation
   151,728.36 : 209,456 = 88,053.86 : x
2. Step 2: Convert to fraction form
   151,728.36/209,456 = 88,053.86/x
3. Step 3: Cross multiply
   151,728.36x = 209,456 × 88,053.86
4. Step 4: Simplify right side
   151,728.36x = 18,443,409,300.16
5. Step 5: Solve for x
   x = 18,443,409,300.16/151,728.36
6. Step 6: Final answer
   x = 121,555.45