Finding the Fourth Proportional to 144,506.94, 199,422.42 and 87,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   144,506.94 : 199,422.42 = 87,145.98 : x
2. Step 2: Convert to fraction form
   144,506.94/199,422.42 = 87,145.98/x
3. Step 3: Cross multiply
   144,506.94x = 199,422.42 × 87,145.98
4. Step 4: Simplify right side
   144,506.94x = 17,378,862,224.87
5. Step 5: Solve for x
   x = 17,378,862,224.87/144,506.94
6. Step 6: Final answer
   x = 120,263.17