Finding the Fourth Proportional to 259,809, 388,587.72 and 152,938.32

Step by Step Solution

1. Step 1: Write the proportion equation
   259,809 : 388,587.72 = 152,938.32 : x
2. Step 2: Convert to fraction form
   259,809/388,587.72 = 152,938.32/x
3. Step 3: Cross multiply
   259,809x = 388,587.72 × 152,938.32
4. Step 4: Simplify right side
   259,809x = 59,429,953,069.43
5. Step 5: Solve for x
   x = 59,429,953,069.43/259,809
6. Step 6: Final answer
   x = 228,744.78