Finding the Fourth Proportional to 144,667.32, 199,507.68 and 99,265.20

Step by Step Solution

1. Step 1: Write the proportion equation
   144,667.32 : 199,507.68 = 99,265.20 : x
2. Step 2: Convert to fraction form
   144,667.32/199,507.68 = 99,265.20/x
3. Step 3: Cross multiply
   144,667.32x = 199,507.68 × 99,265.20
4. Step 4: Simplify right side
   144,667.32x = 19,804,169,756.74
5. Step 5: Solve for x
   x = 19,804,169,756.74/144,667.32
6. Step 6: Final answer
   x = 136,894.56