Finding the Fourth Proportional to 188,111.37, 259,601.18 and 103,231.47

Step by Step Solution

1. Step 1: Write the proportion equation
   188,111.37 : 259,601.18 = 103,231.47 : x
2. Step 2: Convert to fraction form
   188,111.37/259,601.18 = 103,231.47/x
3. Step 3: Cross multiply
   188,111.37x = 259,601.18 × 103,231.47
4. Step 4: Simplify right side
   188,111.37x = 26,799,010,908.98
5. Step 5: Solve for x
   x = 26,799,010,908.98/188,111.37
6. Step 6: Final answer
   x = 142,463.54