Finding the Fourth Proportional to 188,086.12, 259,561.24 and 102,045.72

Step by Step Solution

1. Step 1: Write the proportion equation
   188,086.12 : 259,561.24 = 102,045.72 : x
2. Step 2: Convert to fraction form
   188,086.12/259,561.24 = 102,045.72/x
3. Step 3: Cross multiply
   188,086.12x = 259,561.24 × 102,045.72
4. Step 4: Simplify right side
   188,086.12x = 26,487,113,619.89
5. Step 5: Solve for x
   x = 26,487,113,619.89/188,086.12
6. Step 6: Final answer
   x = 140,824.39