Finding the Fourth Proportional to 282,150.91, 423,224.89 and 99,916.90

Step by Step Solution

1. Step 1: Write the proportion equation
   282,150.91 : 423,224.89 = 99,916.90 : x
2. Step 2: Convert to fraction form
   282,150.91/423,224.89 = 99,916.90/x
3. Step 3: Cross multiply
   282,150.91x = 423,224.89 × 99,916.90
4. Step 4: Simplify right side
   282,150.91x = 42,287,319,011.64
5. Step 5: Solve for x
   x = 42,287,319,011.64/282,150.91
6. Step 6: Final answer
   x = 149,874.83