Finding the Fourth Proportional to 298,758.72, 448,214.72 and 99,135.04

Step by Step Solution

1. Step 1: Write the proportion equation
   298,758.72 : 448,214.72 = 99,135.04 : x
2. Step 2: Convert to fraction form
   298,758.72/448,214.72 = 99,135.04/x
3. Step 3: Cross multiply
   298,758.72x = 448,214.72 × 99,135.04
4. Step 4: Simplify right side
   298,758.72x = 44,433,784,195.79
5. Step 5: Solve for x
   x = 44,433,784,195.79/298,758.72
6. Step 6: Final answer
   x = 148,727.99