Finding the Fourth Proportional to 189,710.51, 261,797.32 and 103,667.60

Step by Step Solution

1. Step 1: Write the proportion equation
   189,710.51 : 261,797.32 = 103,667.60 : x
2. Step 2: Convert to fraction form
   189,710.51/261,797.32 = 103,667.60/x
3. Step 3: Cross multiply
   189,710.51x = 261,797.32 × 103,667.60
4. Step 4: Simplify right side
   189,710.51x = 27,139,899,850.83
5. Step 5: Solve for x
   x = 27,139,899,850.83/189,710.51
6. Step 6: Final answer
   x = 143,059.55