Finding the Fourth Proportional to 123,798.40, 170,667.24 and 87,975.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123,798.40 : 170,667.24 = 87,975.34 : x
2. Step 2: Convert to fraction form
   123,798.40/170,667.24 = 87,975.34/x
3. Step 3: Cross multiply
   123,798.40x = 170,667.24 × 87,975.34
4. Step 4: Simplify right side
   123,798.40x = 15,014,508,465.86
5. Step 5: Solve for x
   x = 15,014,508,465.86/123,798.40
6. Step 6: Final answer
   x = 121,281.93