Finding the Fourth Proportional to 188,522.10, 260,164.89 and 102,485.97

Step by Step Solution

1. Step 1: Write the proportion equation
   188,522.10 : 260,164.89 = 102,485.97 : x
2. Step 2: Convert to fraction form
   188,522.10/260,164.89 = 102,485.97/x
3. Step 3: Cross multiply
   188,522.10x = 260,164.89 × 102,485.97
4. Step 4: Simplify right side
   188,522.10x = 26,663,251,111.59
5. Step 5: Solve for x
   x = 26,663,251,111.59/188,522.10
6. Step 6: Final answer
   x = 141,433.03