Finding the Fourth Proportional to 99,367.83, 149,029.31 and 28,288.89

Step by Step Solution

1. Step 1: Write the proportion equation
   99,367.83 : 149,029.31 = 28,288.89 : x
2. Step 2: Convert to fraction form
   99,367.83/149,029.31 = 28,288.89/x
3. Step 3: Cross multiply
   99,367.83x = 149,029.31 × 28,288.89
4. Step 4: Simplify right side
   99,367.83x = 4,215,873,828.09
5. Step 5: Solve for x
   x = 4,215,873,828.09/99,367.83
6. Step 6: Final answer
   x = 42,426.95