Finding the Fourth Proportional to 111,168.86, 153,501.48 and 102,667.87

Step by Step Solution

1. Step 1: Write the proportion equation
   111,168.86 : 153,501.48 = 102,667.87 : x
2. Step 2: Convert to fraction form
   111,168.86/153,501.48 = 102,667.87/x
3. Step 3: Cross multiply
   111,168.86x = 153,501.48 × 102,667.87
4. Step 4: Simplify right side
   111,168.86x = 15,759,669,609.69
5. Step 5: Solve for x
   x = 15,759,669,609.69/111,168.86
6. Step 6: Final answer
   x = 141,763.34