Finding the Fourth Proportional to 144,298.30, 199,002.72 and 90,588.32

Step by Step Solution

1. Step 1: Write the proportion equation
   144,298.30 : 199,002.72 = 90,588.32 : x
2. Step 2: Convert to fraction form
   144,298.30/199,002.72 = 90,588.32/x
3. Step 3: Cross multiply
   144,298.30x = 199,002.72 × 90,588.32
4. Step 4: Simplify right side
   144,298.30x = 18,027,322,080.23
5. Step 5: Solve for x
   x = 18,027,322,080.23/144,298.30
6. Step 6: Final answer
   x = 124,930.94