Finding the Fourth Proportional to 188,865.69, 260,868.70 and 137,100.17

Step by Step Solution

1. Step 1: Write the proportion equation
   188,865.69 : 260,868.70 = 137,100.17 : x
2. Step 2: Convert to fraction form
   188,865.69/260,868.70 = 137,100.17/x
3. Step 3: Cross multiply
   188,865.69x = 260,868.70 × 137,100.17
4. Step 4: Simplify right side
   188,865.69x = 35,765,141,127.83
5. Step 5: Solve for x
   x = 35,765,141,127.83/188,865.69
6. Step 6: Final answer
   x = 189,368.13